Step | Hyp | Ref
| Expression |
1 | | breq2 5078 |
. . . . . . . . . . 11
⊢ (𝑑 = 𝑦 → (((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑 ↔ ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) |
2 | 1 | imbi2d 341 |
. . . . . . . . . 10
⊢ (𝑑 = 𝑦 → (((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦))) |
3 | 2 | 2ralbidv 3129 |
. . . . . . . . 9
⊢ (𝑑 = 𝑦 → (∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦))) |
4 | 3 | rexbidv 3226 |
. . . . . . . 8
⊢ (𝑑 = 𝑦 → (∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦))) |
5 | 4 | cbvralvw 3383 |
. . . . . . 7
⊢
(∀𝑑 ∈
ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) |
6 | | r19.12 3257 |
. . . . . . . 8
⊢
(∃𝑧 ∈
ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) |
7 | 6 | ralimi 3087 |
. . . . . . 7
⊢
(∀𝑦 ∈
ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∀𝑦 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) |
8 | 5, 7 | sylbi 216 |
. . . . . 6
⊢
(∀𝑑 ∈
ℝ+ ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) → ∀𝑦 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) |
9 | | rphalfcl 12757 |
. . . . . . . . 9
⊢ (𝑑 ∈ ℝ+
→ (𝑑 / 2) ∈
ℝ+) |
10 | | breq2 5078 |
. . . . . . . . . . . . . . . 16
⊢ (𝑦 = (𝑑 / 2) → (((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦 ↔ ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) |
11 | 10 | imbi2d 341 |
. . . . . . . . . . . . . . 15
⊢ (𝑦 = (𝑑 / 2) → (((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
12 | 11 | ralbidv 3112 |
. . . . . . . . . . . . . 14
⊢ (𝑦 = (𝑑 / 2) → (∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
13 | 12 | rexbidv 3226 |
. . . . . . . . . . . . 13
⊢ (𝑦 = (𝑑 / 2) → (∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
14 | 13 | ralbidv 3112 |
. . . . . . . . . . . 12
⊢ (𝑦 = (𝑑 / 2) → (∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
15 | 14 | rspcva 3559 |
. . . . . . . . . . 11
⊢ (((𝑑 / 2) ∈ ℝ+
∧ ∀𝑦 ∈
ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) → ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) |
16 | | heicant.j |
. . . . . . . . . . . . . . 15
⊢ (𝜑 → (MetOpen‘𝐶) ∈ Comp) |
17 | 16 | ad3antrrr 727 |
. . . . . . . . . . . . . 14
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧
∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (MetOpen‘𝐶) ∈ Comp) |
18 | | heicant.c |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝜑 → 𝐶 ∈ (∞Met‘𝑋)) |
19 | 18 | ad2antrr 723 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) → 𝐶 ∈ (∞Met‘𝑋)) |
20 | 19 | anim1i 615 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) → (𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋)) |
21 | | rphalfcl 12757 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑧 ∈ ℝ+
→ (𝑧 / 2) ∈
ℝ+) |
22 | 21 | rpxrd 12773 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝑧 ∈ ℝ+
→ (𝑧 / 2) ∈
ℝ*) |
23 | | eqid 2738 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢
(MetOpen‘𝐶) =
(MetOpen‘𝐶) |
24 | 23 | blopn 23656 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ (𝑧 / 2) ∈ ℝ*) →
(𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶)) |
25 | 24 | 3expa 1117 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋) ∧ (𝑧 / 2) ∈ ℝ*) →
(𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶)) |
26 | 20, 22, 25 | syl2an 596 |
. . . . . . . . . . . . . . . . . . . 20
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) → (𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶)) |
27 | 26 | adantr 481 |
. . . . . . . . . . . . . . . . . . 19
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) ∧
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶)) |
28 | 21 | rpgt0d 12775 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑧 ∈ ℝ+
→ 0 < (𝑧 /
2)) |
29 | 22, 28 | jca 512 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝑧 ∈ ℝ+
→ ((𝑧 / 2) ∈
ℝ* ∧ 0 < (𝑧 / 2))) |
30 | | xblcntr 23564 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ ((𝑧 / 2) ∈ ℝ* ∧ 0 <
(𝑧 / 2))) → 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2))) |
31 | 30 | 3expa 1117 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋) ∧ ((𝑧 / 2) ∈ ℝ* ∧ 0 <
(𝑧 / 2))) → 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2))) |
32 | 20, 29, 31 | syl2an 596 |
. . . . . . . . . . . . . . . . . . . 20
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) → 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2))) |
33 | 32 | adantr 481 |
. . . . . . . . . . . . . . . . . . 19
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) ∧
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2))) |
34 | | opelxpi 5626 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((𝑥 ∈ 𝑋 ∧ (𝑧 / 2) ∈ ℝ+) →
〈𝑥, (𝑧 / 2)〉 ∈ (𝑋 ×
ℝ+)) |
35 | 21, 34 | sylan2 593 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((𝑥 ∈ 𝑋 ∧ 𝑧 ∈ ℝ+) →
〈𝑥, (𝑧 / 2)〉 ∈ (𝑋 ×
ℝ+)) |
36 | 35 | ad4ant23 750 |
. . . . . . . . . . . . . . . . . . . 20
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) ∧
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → 〈𝑥, (𝑧 / 2)〉 ∈ (𝑋 ×
ℝ+)) |
37 | | rpcn 12740 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (𝑧 ∈ ℝ+
→ 𝑧 ∈
ℂ) |
38 | 37 | 2halvesd 12219 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑧 ∈ ℝ+
→ ((𝑧 / 2) + (𝑧 / 2)) = 𝑧) |
39 | 38 | breq2d 5086 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑧 ∈ ℝ+
→ ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) ↔ (𝑥𝐶𝑐) < 𝑧)) |
40 | 39 | imbi1d 342 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑧 ∈ ℝ+
→ (((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ((𝑥𝐶𝑐) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
41 | 40 | ralbidv 3112 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑧 ∈ ℝ+
→ (∀𝑐 ∈
𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ∀𝑐 ∈ 𝑋 ((𝑥𝐶𝑐) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
42 | | oveq2 7283 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑐 = 𝑤 → (𝑥𝐶𝑐) = (𝑥𝐶𝑤)) |
43 | 42 | breq1d 5084 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑐 = 𝑤 → ((𝑥𝐶𝑐) < 𝑧 ↔ (𝑥𝐶𝑤) < 𝑧)) |
44 | | fveq2 6774 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (𝑐 = 𝑤 → (𝑓‘𝑐) = (𝑓‘𝑤)) |
45 | 44 | oveq2d 7291 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑐 = 𝑤 → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) = ((𝑓‘𝑥)𝐷(𝑓‘𝑤))) |
46 | 45 | breq1d 5084 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑐 = 𝑤 → (((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2) ↔ ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) |
47 | 43, 46 | imbi12d 345 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑐 = 𝑤 → (((𝑥𝐶𝑐) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
48 | 47 | cbvralvw 3383 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢
(∀𝑐 ∈
𝑋 ((𝑥𝐶𝑐) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) |
49 | 41, 48 | bitrdi 287 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑧 ∈ ℝ+
→ (∀𝑐 ∈
𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
50 | 49 | biimpar 478 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((𝑧 ∈ ℝ+
∧ ∀𝑤 ∈
𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∀𝑐 ∈ 𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2))) |
51 | 50 | adantll 711 |
. . . . . . . . . . . . . . . . . . . 20
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) ∧
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∀𝑐 ∈ 𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2))) |
52 | | vex 3436 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ 𝑥 ∈ V |
53 | | ovex 7308 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑧 / 2) ∈ V |
54 | 52, 53 | op1std 7841 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (1st
‘𝑝) = 𝑥) |
55 | 52, 53 | op2ndd 7842 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (2nd
‘𝑝) = (𝑧 / 2)) |
56 | 54, 55 | oveq12d 7293 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → ((1st
‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) = (𝑥(ball‘𝐶)(𝑧 / 2))) |
57 | 56 | eqcomd 2744 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝))) |
58 | 57 | biantrurd 533 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
59 | 54 | oveq1d 7290 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → ((1st
‘𝑝)𝐶𝑐) = (𝑥𝐶𝑐)) |
60 | 55, 55 | oveq12d 7293 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → ((2nd
‘𝑝) + (2nd
‘𝑝)) = ((𝑧 / 2) + (𝑧 / 2))) |
61 | 59, 60 | breq12d 5087 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (((1st
‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) ↔ (𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)))) |
62 | 54 | fveq2d 6778 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (𝑓‘(1st ‘𝑝)) = (𝑓‘𝑥)) |
63 | 62 | oveq1d 7290 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) = ((𝑓‘𝑥)𝐷(𝑓‘𝑐))) |
64 | 63 | breq1d 5084 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2) ↔ ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2))) |
65 | 61, 64 | imbi12d 345 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → ((((1st
‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
66 | 65 | ralbidv 3112 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ∀𝑐 ∈ 𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
67 | 58, 66 | bitr3d 280 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝑝 = 〈𝑥, (𝑧 / 2)〉 → (((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ↔ ∀𝑐 ∈ 𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
68 | 67 | rspcev 3561 |
. . . . . . . . . . . . . . . . . . . 20
⊢
((〈𝑥, (𝑧 / 2)〉 ∈ (𝑋 × ℝ+)
∧ ∀𝑐 ∈
𝑋 ((𝑥𝐶𝑐) < ((𝑧 / 2) + (𝑧 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑐)) < (𝑑 / 2))) → ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
69 | 36, 51, 68 | syl2anc 584 |
. . . . . . . . . . . . . . . . . . 19
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) ∧
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
70 | | eleq2 2827 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → (𝑥 ∈ 𝑏 ↔ 𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2)))) |
71 | | eqeq1 2742 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → (𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ↔ (𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)))) |
72 | 71 | anbi1d 630 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → ((𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ↔ ((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
73 | 72 | rexbidv 3226 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → (∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ↔ ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
74 | 70, 73 | anbi12d 631 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝑏 = (𝑥(ball‘𝐶)(𝑧 / 2)) → ((𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ↔ (𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2)) ∧ ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
75 | 74 | rspcev 3561 |
. . . . . . . . . . . . . . . . . . 19
⊢ (((𝑥(ball‘𝐶)(𝑧 / 2)) ∈ (MetOpen‘𝐶) ∧ (𝑥 ∈ (𝑥(ball‘𝐶)(𝑧 / 2)) ∧ ∃𝑝 ∈ (𝑋 × ℝ+)((𝑥(ball‘𝐶)(𝑧 / 2)) = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) → ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
76 | 27, 33, 69, 75 | syl12anc 834 |
. . . . . . . . . . . . . . . . . 18
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) ∧ 𝑧 ∈ ℝ+) ∧
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
77 | 76 | rexlimdva2 3216 |
. . . . . . . . . . . . . . . . 17
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑥 ∈ 𝑋) → (∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
78 | 77 | ralimdva 3108 |
. . . . . . . . . . . . . . . 16
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) →
(∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ∀𝑥 ∈ 𝑋 ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
79 | 78 | imp 407 |
. . . . . . . . . . . . . . 15
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧
∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∀𝑥 ∈ 𝑋 ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
80 | 23 | mopnuni 23594 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝐶 ∈ (∞Met‘𝑋) → 𝑋 = ∪
(MetOpen‘𝐶)) |
81 | 18, 80 | syl 17 |
. . . . . . . . . . . . . . . . 17
⊢ (𝜑 → 𝑋 = ∪
(MetOpen‘𝐶)) |
82 | 81 | raleqdv 3348 |
. . . . . . . . . . . . . . . 16
⊢ (𝜑 → (∀𝑥 ∈ 𝑋 ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ↔ ∀𝑥 ∈ ∪
(MetOpen‘𝐶)∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
83 | 82 | ad3antrrr 727 |
. . . . . . . . . . . . . . 15
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧
∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (∀𝑥 ∈ 𝑋 ∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ↔ ∀𝑥 ∈ ∪
(MetOpen‘𝐶)∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
84 | 79, 83 | mpbid 231 |
. . . . . . . . . . . . . 14
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧
∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∀𝑥 ∈ ∪
(MetOpen‘𝐶)∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
85 | | eqid 2738 |
. . . . . . . . . . . . . . 15
⊢ ∪ (MetOpen‘𝐶) = ∪
(MetOpen‘𝐶) |
86 | | fveq2 6774 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑝 = (𝑔‘𝑏) → (1st ‘𝑝) = (1st
‘(𝑔‘𝑏))) |
87 | | fveq2 6774 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑝 = (𝑔‘𝑏) → (2nd ‘𝑝) = (2nd
‘(𝑔‘𝑏))) |
88 | 86, 87 | oveq12d 7293 |
. . . . . . . . . . . . . . . . 17
⊢ (𝑝 = (𝑔‘𝑏) → ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) |
89 | 88 | eqeq2d 2749 |
. . . . . . . . . . . . . . . 16
⊢ (𝑝 = (𝑔‘𝑏) → (𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ↔ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))))) |
90 | 86 | oveq1d 7290 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑝 = (𝑔‘𝑏) → ((1st ‘𝑝)𝐶𝑐) = ((1st ‘(𝑔‘𝑏))𝐶𝑐)) |
91 | 87, 87 | oveq12d 7293 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑝 = (𝑔‘𝑏) → ((2nd ‘𝑝) + (2nd ‘𝑝)) = ((2nd
‘(𝑔‘𝑏)) + (2nd
‘(𝑔‘𝑏)))) |
92 | 90, 91 | breq12d 5087 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑝 = (𝑔‘𝑏) → (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) ↔ ((1st
‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))))) |
93 | 86 | fveq2d 6778 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝑝 = (𝑔‘𝑏) → (𝑓‘(1st ‘𝑝)) = (𝑓‘(1st ‘(𝑔‘𝑏)))) |
94 | 93 | oveq1d 7290 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑝 = (𝑔‘𝑏) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐))) |
95 | 94 | breq1d 5084 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑝 = (𝑔‘𝑏) → (((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2) ↔ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) |
96 | 92, 95 | imbi12d 345 |
. . . . . . . . . . . . . . . . 17
⊢ (𝑝 = (𝑔‘𝑏) → ((((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
97 | 96 | ralbidv 3112 |
. . . . . . . . . . . . . . . 16
⊢ (𝑝 = (𝑔‘𝑏) → (∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
98 | 89, 97 | anbi12d 631 |
. . . . . . . . . . . . . . 15
⊢ (𝑝 = (𝑔‘𝑏) → ((𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ↔ (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) |
99 | 85, 98 | cmpcovf 22542 |
. . . . . . . . . . . . . 14
⊢
(((MetOpen‘𝐶)
∈ Comp ∧ ∀𝑥
∈ ∪ (MetOpen‘𝐶)∃𝑏 ∈ (MetOpen‘𝐶)(𝑥 ∈ 𝑏 ∧ ∃𝑝 ∈ (𝑋 × ℝ+)(𝑏 = ((1st ‘𝑝)(ball‘𝐶)(2nd ‘𝑝)) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘𝑝)𝐶𝑐) < ((2nd ‘𝑝) + (2nd ‘𝑝)) → ((𝑓‘(1st ‘𝑝))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) → ∃𝑠 ∈ (𝒫 (MetOpen‘𝐶) ∩ Fin)(∪ (MetOpen‘𝐶) = ∪ 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
100 | 17, 84, 99 | syl2anc 584 |
. . . . . . . . . . . . 13
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧
∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ∃𝑠 ∈ (𝒫 (MetOpen‘𝐶) ∩ Fin)(∪ (MetOpen‘𝐶) = ∪ 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))))) |
101 | 100 | ex 413 |
. . . . . . . . . . . 12
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) →
(∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ∃𝑠 ∈ (𝒫 (MetOpen‘𝐶) ∩ Fin)(∪ (MetOpen‘𝐶) = ∪ 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))))) |
102 | | elinel2 4130 |
. . . . . . . . . . . . . 14
⊢ (𝑠 ∈ (𝒫
(MetOpen‘𝐶) ∩
Fin) → 𝑠 ∈
Fin) |
103 | | simpll 764 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) → 𝜑) |
104 | 103 | anim1i 615 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) → (𝜑 ∧ 𝑠 ∈ Fin)) |
105 | | frn 6607 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → ran
𝑔 ⊆ (𝑋 ×
ℝ+)) |
106 | | rnss 5848 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (ran
𝑔 ⊆ (𝑋 × ℝ+)
→ ran ran 𝑔 ⊆
ran (𝑋 ×
ℝ+)) |
107 | 105, 106 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → ran ran
𝑔 ⊆ ran (𝑋 ×
ℝ+)) |
108 | | rnxpss 6075 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ran
(𝑋 ×
ℝ+) ⊆ ℝ+ |
109 | 107, 108 | sstrdi 3933 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → ran ran
𝑔 ⊆
ℝ+) |
110 | 109 | adantl 482 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
ran 𝑔 ⊆
ℝ+) |
111 | | simplr 766 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → 𝑠 ∈ Fin) |
112 | | ffun 6603 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → Fun
𝑔) |
113 | | vex 3436 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢ 𝑔 ∈ V |
114 | 113 | fundmen 8821 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢ (Fun
𝑔 → dom 𝑔 ≈ 𝑔) |
115 | 114 | ensymd 8791 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (Fun
𝑔 → 𝑔 ≈ dom 𝑔) |
116 | 112, 115 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → 𝑔 ≈ dom 𝑔) |
117 | | fdm 6609 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → dom
𝑔 = 𝑠) |
118 | 116, 117 | breqtrd 5100 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → 𝑔 ≈ 𝑠) |
119 | | enfii 8972 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ ((𝑠 ∈ Fin ∧ 𝑔 ≈ 𝑠) → 𝑔 ∈ Fin) |
120 | 118, 119 | sylan2 593 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ ((𝑠 ∈ Fin ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝑔 ∈ Fin) |
121 | | rnfi 9102 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (𝑔 ∈ Fin → ran 𝑔 ∈ Fin) |
122 | | rnfi 9102 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (ran
𝑔 ∈ Fin → ran ran
𝑔 ∈
Fin) |
123 | 120, 121,
122 | 3syl 18 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((𝑠 ∈ Fin ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
ran 𝑔 ∈
Fin) |
124 | 111, 123 | sylan 580 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
ran 𝑔 ∈
Fin) |
125 | 117 | adantl 482 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → dom
𝑔 = 𝑠) |
126 | | eqtr 2761 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢ ((𝑋 = ∪
(MetOpen‘𝐶) ∧
∪ (MetOpen‘𝐶) = ∪ 𝑠) → 𝑋 = ∪ 𝑠) |
127 | 81, 126 | sylan 580 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢ ((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → 𝑋 = ∪ 𝑠) |
128 | | heicant.x |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢ (𝜑 → 𝑋 ≠ ∅) |
129 | 128 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢ ((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → 𝑋 ≠ ∅) |
130 | 127, 129 | eqnetrrd 3012 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢ ((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → ∪ 𝑠
≠ ∅) |
131 | | unieq 4850 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢ (𝑠 = ∅ → ∪ 𝑠 =
∪ ∅) |
132 | | uni0 4869 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢ ∪ ∅ = ∅ |
133 | 131, 132 | eqtrdi 2794 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢ (𝑠 = ∅ → ∪ 𝑠 =
∅) |
134 | 133 | necon3i 2976 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢ (∪ 𝑠
≠ ∅ → 𝑠 ≠
∅) |
135 | 130, 134 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ ((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → 𝑠 ≠ ∅) |
136 | 135 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝑠 ≠ ∅) |
137 | 125, 136 | eqnetrd 3011 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → dom
𝑔 ≠
∅) |
138 | | dm0rn0 5834 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (dom
𝑔 = ∅ ↔ ran
𝑔 =
∅) |
139 | 138 | necon3bii 2996 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (dom
𝑔 ≠ ∅ ↔ ran
𝑔 ≠
∅) |
140 | 137, 139 | sylib 217 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
𝑔 ≠
∅) |
141 | | relxp 5607 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ Rel
(𝑋 ×
ℝ+) |
142 | | relss 5692 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (ran
𝑔 ⊆ (𝑋 × ℝ+)
→ (Rel (𝑋 ×
ℝ+) → Rel ran 𝑔)) |
143 | 105, 141,
142 | mpisyl 21 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → Rel ran
𝑔) |
144 | | relrn0 5878 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (Rel ran
𝑔 → (ran 𝑔 = ∅ ↔ ran ran 𝑔 = ∅)) |
145 | 144 | necon3bid 2988 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (Rel ran
𝑔 → (ran 𝑔 ≠ ∅ ↔ ran ran
𝑔 ≠
∅)) |
146 | 143, 145 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → (ran
𝑔 ≠ ∅ ↔ ran
ran 𝑔 ≠
∅)) |
147 | 146 | adantl 482 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → (ran
𝑔 ≠ ∅ ↔ ran
ran 𝑔 ≠
∅)) |
148 | 140, 147 | mpbid 231 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (((𝜑 ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
ran 𝑔 ≠
∅) |
149 | 148 | adantllr 716 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
ran 𝑔 ≠
∅) |
150 | | rpssre 12737 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢
ℝ+ ⊆ ℝ |
151 | 110, 150 | sstrdi 3933 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → ran
ran 𝑔 ⊆
ℝ) |
152 | | ltso 11055 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ < Or
ℝ |
153 | | fiinfcl 9260 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (( <
Or ℝ ∧ (ran ran 𝑔
∈ Fin ∧ ran ran 𝑔
≠ ∅ ∧ ran ran 𝑔 ⊆ ℝ)) → inf(ran ran 𝑔, ℝ, < ) ∈ ran ran
𝑔) |
154 | 152, 153 | mpan 687 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((ran ran
𝑔 ∈ Fin ∧ ran ran
𝑔 ≠ ∅ ∧ ran
ran 𝑔 ⊆ ℝ)
→ inf(ran ran 𝑔,
ℝ, < ) ∈ ran ran 𝑔) |
155 | 124, 149,
151, 154 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) →
inf(ran ran 𝑔, ℝ,
< ) ∈ ran ran 𝑔) |
156 | 110, 155 | sseldd 3922 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((((𝜑 ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) →
inf(ran ran 𝑔, ℝ,
< ) ∈ ℝ+) |
157 | 104, 156 | sylanl1 677 |
. . . . . . . . . . . . . . . . . . 19
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) →
inf(ran ran 𝑔, ℝ,
< ) ∈ ℝ+) |
158 | 157 | adantr 481 |
. . . . . . . . . . . . . . . . . 18
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → inf(ran ran 𝑔, ℝ, < ) ∈
ℝ+) |
159 | 81 | ad3antrrr 727 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) → 𝑋 = ∪
(MetOpen‘𝐶)) |
160 | 159 | anim1i 615 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → (𝑋 = ∪
(MetOpen‘𝐶) ∧
∪ (MetOpen‘𝐶) = ∪ 𝑠)) |
161 | 160 | ad2antrr 723 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → (𝑋 = ∪
(MetOpen‘𝐶) ∧
∪ (MetOpen‘𝐶) = ∪ 𝑠)) |
162 | | simpl 483 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) → 𝑥 ∈ 𝑋) |
163 | 126 | eleq2d 2824 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((𝑋 = ∪
(MetOpen‘𝐶) ∧
∪ (MetOpen‘𝐶) = ∪ 𝑠) → (𝑥 ∈ 𝑋 ↔ 𝑥 ∈ ∪ 𝑠)) |
164 | | eluni2 4843 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (𝑥 ∈ ∪ 𝑠
↔ ∃𝑏 ∈
𝑠 𝑥 ∈ 𝑏) |
165 | 163, 164 | bitrdi 287 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((𝑋 = ∪
(MetOpen‘𝐶) ∧
∪ (MetOpen‘𝐶) = ∪ 𝑠) → (𝑥 ∈ 𝑋 ↔ ∃𝑏 ∈ 𝑠 𝑥 ∈ 𝑏)) |
166 | 165 | biimpa 477 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (((𝑋 = ∪
(MetOpen‘𝐶) ∧
∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑥 ∈ 𝑋) → ∃𝑏 ∈ 𝑠 𝑥 ∈ 𝑏) |
167 | 161, 162,
166 | syl2an 596 |
. . . . . . . . . . . . . . . . . . . 20
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ∃𝑏 ∈ 𝑠 𝑥 ∈ 𝑏) |
168 | | nfv 1917 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢
Ⅎ𝑏(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 ×
ℝ+)) |
169 | | nfra1 3144 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢
Ⅎ𝑏∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) |
170 | 168, 169 | nfan 1902 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢
Ⅎ𝑏((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
171 | | nfv 1917 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢
Ⅎ𝑏(𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) |
172 | 170, 171 | nfan 1902 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
Ⅎ𝑏(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) |
173 | | nfv 1917 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
Ⅎ𝑏((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) |
174 | | rspa 3132 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢
((∀𝑏 ∈
𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ∧ 𝑏 ∈ 𝑠) → (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) |
175 | | oveq2 7283 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ (𝑐 = 𝑥 → ((1st ‘(𝑔‘𝑏))𝐶𝑐) = ((1st ‘(𝑔‘𝑏))𝐶𝑥)) |
176 | 175 | breq1d 5084 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (𝑐 = 𝑥 → (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ↔ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))))) |
177 | | fveq2 6774 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ (𝑐 = 𝑥 → (𝑓‘𝑐) = (𝑓‘𝑥)) |
178 | 177 | oveq2d 7291 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ (𝑐 = 𝑥 → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
179 | 178 | breq1d 5084 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (𝑐 = 𝑥 → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2) ↔ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2))) |
180 | 176, 179 | imbi12d 345 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢ (𝑐 = 𝑥 → ((((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ (((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)))) |
181 | 180 | rspcva 3559 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢ ((𝑥 ∈ 𝑋 ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) → (((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2))) |
182 | | oveq2 7283 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ (𝑐 = 𝑤 → ((1st ‘(𝑔‘𝑏))𝐶𝑐) = ((1st ‘(𝑔‘𝑏))𝐶𝑤)) |
183 | 182 | breq1d 5084 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (𝑐 = 𝑤 → (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ↔ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))))) |
184 | 44 | oveq2d 7291 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ (𝑐 = 𝑤 → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) |
185 | 184 | breq1d 5084 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (𝑐 = 𝑤 → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2) ↔ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) |
186 | 183, 185 | imbi12d 345 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢ (𝑐 = 𝑤 → ((((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)) ↔ (((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
187 | 186 | rspcva 3559 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢ ((𝑤 ∈ 𝑋 ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) → (((1st
‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) |
188 | 181, 187 | anim12i 613 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
⊢ (((𝑥 ∈ 𝑋 ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ∧ (𝑤 ∈ 𝑋 ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → ((((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)) ∧ (((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
189 | 188 | anandirs 676 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢ (((𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) → ((((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)) ∧ (((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
190 | | anim12 806 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢
(((((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)) ∧ (((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
191 | 189, 190 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢ (((𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) → ((((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
192 | 191 | adantrl 713 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢ (((𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) ∧ (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → ((((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
193 | 192 | ad4ant23 750 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢
(((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)))) |
194 | | simpll 764 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → ((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈
ℝ+)) |
195 | 194 | anim1i 615 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) →
(((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 ×
ℝ+))) |
196 | 195 | anim1i 615 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋))) |
197 | 109, 150 | sstrdi 3933 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → ran ran
𝑔 ⊆
ℝ) |
198 | 197 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → ran ran 𝑔 ⊆ ℝ) |
199 | | 0re 10977 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ 0 ∈
ℝ |
200 | | rpge0 12743 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ (𝑦 ∈ ℝ+
→ 0 ≤ 𝑦) |
201 | 200 | rgen 3074 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
∀𝑦 ∈
ℝ+ 0 ≤ 𝑦 |
202 | | ssralv 3987 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢ (ran ran
𝑔 ⊆
ℝ+ → (∀𝑦 ∈ ℝ+ 0 ≤ 𝑦 → ∀𝑦 ∈ ran ran 𝑔0 ≤ 𝑦)) |
203 | 109, 201,
202 | mpisyl 21 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) →
∀𝑦 ∈ ran ran
𝑔0 ≤ 𝑦) |
204 | | breq1 5077 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ (𝑥 = 0 → (𝑥 ≤ 𝑦 ↔ 0 ≤ 𝑦)) |
205 | 204 | ralbidv 3112 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢ (𝑥 = 0 → (∀𝑦 ∈ ran ran 𝑔 𝑥 ≤ 𝑦 ↔ ∀𝑦 ∈ ran ran 𝑔0 ≤ 𝑦)) |
206 | 205 | rspcev 3561 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ ((0
∈ ℝ ∧ ∀𝑦 ∈ ran ran 𝑔0 ≤ 𝑦) → ∃𝑥 ∈ ℝ ∀𝑦 ∈ ran ran 𝑔 𝑥 ≤ 𝑦) |
207 | 199, 203,
206 | sylancr 587 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) →
∃𝑥 ∈ ℝ
∀𝑦 ∈ ran ran
𝑔 𝑥 ≤ 𝑦) |
208 | 207 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → ∃𝑥 ∈ ℝ ∀𝑦 ∈ ran ran 𝑔 𝑥 ≤ 𝑦) |
209 | 143 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → Rel ran 𝑔) |
210 | | ffn 6600 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ (𝑔:𝑠⟶(𝑋 × ℝ+) → 𝑔 Fn 𝑠) |
211 | | fnfvelrn 6958 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ ((𝑔 Fn 𝑠 ∧ 𝑏 ∈ 𝑠) → (𝑔‘𝑏) ∈ ran 𝑔) |
212 | 210, 211 | sylan 580 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (𝑔‘𝑏) ∈ ran 𝑔) |
213 | | 2ndrn 7882 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((Rel ran
𝑔 ∧ (𝑔‘𝑏) ∈ ran 𝑔) → (2nd ‘(𝑔‘𝑏)) ∈ ran ran 𝑔) |
214 | 209, 212,
213 | syl2anc 584 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈ ran ran 𝑔) |
215 | | infrelb 11960 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((ran ran
𝑔 ⊆ ℝ ∧
∃𝑥 ∈ ℝ
∀𝑦 ∈ ran ran
𝑔 𝑥 ≤ 𝑦 ∧ (2nd ‘(𝑔‘𝑏)) ∈ ran ran 𝑔) → inf(ran ran 𝑔, ℝ, < ) ≤ (2nd
‘(𝑔‘𝑏))) |
216 | 198, 208,
214, 215 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → inf(ran ran 𝑔, ℝ, < ) ≤ (2nd
‘(𝑔‘𝑏))) |
217 | 216 | adantll 711 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏 ∈ 𝑠) → inf(ran ran 𝑔, ℝ, < ) ≤ (2nd
‘(𝑔‘𝑏))) |
218 | 217 | ad2ant2r 744 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → inf(ran ran 𝑔, ℝ, < ) ≤ (2nd
‘(𝑔‘𝑏))) |
219 | 18 | ad3antrrr 727 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝐶 ∈ (∞Met‘𝑋)) |
220 | | xmetcl 23484 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) → (𝑥𝐶𝑤) ∈
ℝ*) |
221 | 220 | 3expb 1119 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → (𝑥𝐶𝑤) ∈
ℝ*) |
222 | 219, 221 | sylan 580 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → (𝑥𝐶𝑤) ∈
ℝ*) |
223 | 222 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (𝑥𝐶𝑤) ∈
ℝ*) |
224 | | simplr 766 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → 𝑔:𝑠⟶(𝑋 ×
ℝ+)) |
225 | | simpl 483 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ ((𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏) → 𝑏 ∈ 𝑠) |
226 | 214 | ne0d 4269 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → ran ran 𝑔 ≠ ∅) |
227 | | infrecl 11957 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((ran ran
𝑔 ⊆ ℝ ∧ ran
ran 𝑔 ≠ ∅ ∧
∃𝑥 ∈ ℝ
∀𝑦 ∈ ran ran
𝑔 𝑥 ≤ 𝑦) → inf(ran ran 𝑔, ℝ, < ) ∈
ℝ) |
228 | 198, 226,
208, 227 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → inf(ran ran 𝑔, ℝ, < ) ∈
ℝ) |
229 | 228 | rexrd 11025 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → inf(ran ran 𝑔, ℝ, < ) ∈
ℝ*) |
230 | 224, 225,
229 | syl2an 596 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → inf(ran ran 𝑔, ℝ, < ) ∈
ℝ*) |
231 | | simpr 485 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝑔:𝑠⟶(𝑋 ×
ℝ+)) |
232 | 231 | ffvelrnda 6961 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏 ∈ 𝑠) → (𝑔‘𝑏) ∈ (𝑋 ×
ℝ+)) |
233 | | xp2nd 7864 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑔‘𝑏) ∈ (𝑋 × ℝ+) →
(2nd ‘(𝑔‘𝑏)) ∈
ℝ+) |
234 | 232, 233 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ+) |
235 | 234 | rpxrd 12773 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ*) |
236 | 235 | ad2ant2r 744 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ*) |
237 | | xrltletr 12891 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (((𝑥𝐶𝑤) ∈ ℝ* ∧ inf(ran
ran 𝑔, ℝ, < )
∈ ℝ* ∧ (2nd ‘(𝑔‘𝑏)) ∈ ℝ*) →
(((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) ∧ inf(ran ran 𝑔, ℝ, < ) ≤
(2nd ‘(𝑔‘𝑏))) → (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)))) |
238 | 223, 230,
236, 237 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) ∧ inf(ran ran 𝑔, ℝ, < ) ≤
(2nd ‘(𝑔‘𝑏))) → (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)))) |
239 | 218, 238 | mpan2d 691 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)))) |
240 | 239 | adantlr 712 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)))) |
241 | 18 | ad6antr 733 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → 𝐶 ∈ (∞Met‘𝑋)) |
242 | | simpllr 773 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) → 𝑔:𝑠⟶(𝑋 ×
ℝ+)) |
243 | | ffvelrn 6959 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (𝑔‘𝑏) ∈ (𝑋 ×
ℝ+)) |
244 | | xp1st 7863 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ ((𝑔‘𝑏) ∈ (𝑋 × ℝ+) →
(1st ‘(𝑔‘𝑏)) ∈ 𝑋) |
245 | 243, 244 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (1st ‘(𝑔‘𝑏)) ∈ 𝑋) |
246 | 242, 225,
245 | syl2an 596 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (1st ‘(𝑔‘𝑏)) ∈ 𝑋) |
247 | | simpr 485 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) → 𝑤 ∈ 𝑋) |
248 | 247 | ad3antlr 728 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → 𝑤 ∈ 𝑋) |
249 | | xmetcl 23484 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ (1st
‘(𝑔‘𝑏)) ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ∈
ℝ*) |
250 | 241, 246,
248, 249 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ∈
ℝ*) |
251 | 250 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ∈
ℝ*) |
252 | 243, 233 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ+) |
253 | 224, 252 | sylan 580 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ+) |
254 | 253 | ad2ant2r 744 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ+) |
255 | 254 | rpred 12772 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (2nd ‘(𝑔‘𝑏)) ∈ ℝ) |
256 | 162 | ad3antlr 728 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → 𝑥 ∈ 𝑋) |
257 | | xmetcl 23484 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ (1st
‘(𝑔‘𝑏)) ∈ 𝑋 ∧ 𝑥 ∈ 𝑋) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈
ℝ*) |
258 | 241, 246,
256, 257 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈
ℝ*) |
259 | 252 | rpxrd 12773 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ*) |
260 | 242, 225,
259 | syl2an 596 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ*) |
261 | | eleq2 2827 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . 44
⊢ (𝑏 = ((1st
‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) → (𝑥 ∈ 𝑏 ↔ 𝑥 ∈ ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))))) |
262 | 18 | ad5antr 731 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 45
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 𝐶 ∈ (∞Met‘𝑋)) |
263 | 224, 245 | sylan 580 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 45
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (1st ‘(𝑔‘𝑏)) ∈ 𝑋) |
264 | 253 | rpxrd 12773 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 45
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈
ℝ*) |
265 | | elbl 23541 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . 45
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ (1st
‘(𝑔‘𝑏)) ∈ 𝑋 ∧ (2nd ‘(𝑔‘𝑏)) ∈ ℝ*) → (𝑥 ∈ ((1st
‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ↔ (𝑥 ∈ 𝑋 ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))))) |
266 | 262, 263,
264, 265 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . 44
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑥 ∈ ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ↔ (𝑥 ∈ 𝑋 ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))))) |
267 | 261, 266 | sylan9bbr 511 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . 43
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) → (𝑥 ∈ 𝑏 ↔ (𝑥 ∈ 𝑋 ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))))) |
268 | 267 | biimpd 228 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) → (𝑥 ∈ 𝑏 → (𝑥 ∈ 𝑋 ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))))) |
269 | 268 | an32s 649 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ 𝑏 ∈ 𝑠) → (𝑥 ∈ 𝑏 → (𝑥 ∈ 𝑋 ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))))) |
270 | 269 | impr 455 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (𝑥 ∈ 𝑋 ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏)))) |
271 | 270 | simprd 496 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))) |
272 | 258, 260,
271 | xrltled 12884 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏))) |
273 | 224 | ffvelrnda 6961 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑔‘𝑏) ∈ (𝑋 ×
ℝ+)) |
274 | 273, 244 | syl 17 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (1st ‘(𝑔‘𝑏)) ∈ 𝑋) |
275 | | simplrl 774 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 𝑥 ∈ 𝑋) |
276 | 262, 274,
275, 257 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈
ℝ*) |
277 | | xmetge0 23497 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ (1st
‘(𝑔‘𝑏)) ∈ 𝑋 ∧ 𝑥 ∈ 𝑋) → 0 ≤ ((1st
‘(𝑔‘𝑏))𝐶𝑥)) |
278 | 262, 274,
275, 277 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 0 ≤ ((1st
‘(𝑔‘𝑏))𝐶𝑥)) |
279 | | xrrege0 12908 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢
(((((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ* ∧
(2nd ‘(𝑔‘𝑏)) ∈ ℝ) ∧ (0 ≤
((1st ‘(𝑔‘𝑏))𝐶𝑥) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏)))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ) |
280 | 279 | an4s 657 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ* ∧ 0 ≤
((1st ‘(𝑔‘𝑏))𝐶𝑥)) ∧ ((2nd ‘(𝑔‘𝑏)) ∈ ℝ ∧ ((1st
‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏)))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ) |
281 | 280 | ex 413 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ* ∧ 0 ≤
((1st ‘(𝑔‘𝑏))𝐶𝑥)) → (((2nd ‘(𝑔‘𝑏)) ∈ ℝ ∧ ((1st
‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ)) |
282 | 276, 278,
281 | syl2anc 584 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((2nd ‘(𝑔‘𝑏)) ∈ ℝ ∧ ((1st
‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ)) |
283 | 282 | ad2ant2r 744 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((2nd ‘(𝑔‘𝑏)) ∈ ℝ ∧ ((1st
‘(𝑔‘𝑏))𝐶𝑥) ≤ (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ)) |
284 | 255, 272,
283 | mp2and 696 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ) |
285 | 284 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ) |
286 | | xrltle 12883 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ (((𝑥𝐶𝑤) ∈ ℝ* ∧
(2nd ‘(𝑔‘𝑏)) ∈ ℝ*) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)) → (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔‘𝑏)))) |
287 | 223, 236,
286 | syl2anc 584 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)) → (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔‘𝑏)))) |
288 | | xmetge0 23497 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . 43
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋) → 0 ≤ (𝑥𝐶𝑤)) |
289 | 288 | 3expb 1119 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → 0 ≤ (𝑥𝐶𝑤)) |
290 | 219, 289 | sylan 580 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → 0 ≤ (𝑥𝐶𝑤)) |
291 | 290 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → 0 ≤ (𝑥𝐶𝑤)) |
292 | 234 | rpred 12772 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈ ℝ) |
293 | 292 | ad2ant2r 744 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (2nd ‘(𝑔‘𝑏)) ∈ ℝ) |
294 | | xrrege0 12908 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢ ((((𝑥𝐶𝑤) ∈ ℝ* ∧
(2nd ‘(𝑔‘𝑏)) ∈ ℝ) ∧ (0 ≤ (𝑥𝐶𝑤) ∧ (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔‘𝑏)))) → (𝑥𝐶𝑤) ∈ ℝ) |
295 | 294 | ex 413 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢ (((𝑥𝐶𝑤) ∈ ℝ* ∧
(2nd ‘(𝑔‘𝑏)) ∈ ℝ) → ((0 ≤ (𝑥𝐶𝑤) ∧ (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔‘𝑏))) → (𝑥𝐶𝑤) ∈ ℝ)) |
296 | 223, 293,
295 | syl2anc 584 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((0 ≤ (𝑥𝐶𝑤) ∧ (𝑥𝐶𝑤) ≤ (2nd ‘(𝑔‘𝑏))) → (𝑥𝐶𝑤) ∈ ℝ)) |
297 | 291, 296 | mpand 692 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) ≤ (2nd ‘(𝑔‘𝑏)) → (𝑥𝐶𝑤) ∈ ℝ)) |
298 | 287, 297 | syld 47 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)) → (𝑥𝐶𝑤) ∈ ℝ)) |
299 | 298 | adantlr 712 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)) → (𝑥𝐶𝑤) ∈ ℝ)) |
300 | 299 | imp 407 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (𝑥𝐶𝑤) ∈ ℝ) |
301 | 285, 300 | readdcld 11004 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (((1st ‘(𝑔‘𝑏))𝐶𝑥) + (𝑥𝐶𝑤)) ∈ ℝ) |
302 | 301 | rexrd 11025 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (((1st ‘(𝑔‘𝑏))𝐶𝑥) + (𝑥𝐶𝑤)) ∈
ℝ*) |
303 | 254, 254 | rpaddcld 12787 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∈
ℝ+) |
304 | 303 | rpxrd 12773 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∈
ℝ*) |
305 | 304 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∈
ℝ*) |
306 | | xmettri 23504 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ ((1st
‘(𝑔‘𝑏)) ∈ 𝑋 ∧ 𝑤 ∈ 𝑋 ∧ 𝑥 ∈ 𝑋)) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ≤ (((1st ‘(𝑔‘𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤))) |
307 | 241, 246,
248, 256, 306 | syl13anc 1371 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ≤ (((1st ‘(𝑔‘𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤))) |
308 | 307 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ≤ (((1st ‘(𝑔‘𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤))) |
309 | | rexadd 12966 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
((((1st ‘(𝑔‘𝑏))𝐶𝑥) ∈ ℝ ∧ (𝑥𝐶𝑤) ∈ ℝ) → (((1st
‘(𝑔‘𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤)) = (((1st ‘(𝑔‘𝑏))𝐶𝑥) + (𝑥𝐶𝑤))) |
310 | 285, 300,
309 | syl2anc 584 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (((1st ‘(𝑔‘𝑏))𝐶𝑥) +𝑒 (𝑥𝐶𝑤)) = (((1st ‘(𝑔‘𝑏))𝐶𝑥) + (𝑥𝐶𝑤))) |
311 | 308, 310 | breqtrd 5100 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) ≤ (((1st ‘(𝑔‘𝑏))𝐶𝑥) + (𝑥𝐶𝑤))) |
312 | 255 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (2nd ‘(𝑔‘𝑏)) ∈ ℝ) |
313 | 271 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) < (2nd ‘(𝑔‘𝑏))) |
314 | | simpr 485 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) |
315 | 285, 300,
312, 312, 313, 314 | lt2addd 11598 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → (((1st ‘(𝑔‘𝑏))𝐶𝑥) + (𝑥𝐶𝑤)) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) |
316 | 251, 302,
305, 311, 315 | xrlelttrd 12894 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏))) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) |
317 | 316 | ex 413 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))))) |
318 | 252 | rpred 12772 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) ∈ ℝ) |
319 | 318, 252 | ltaddrpd 12805 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧ 𝑏 ∈ 𝑠) → (2nd ‘(𝑔‘𝑏)) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) |
320 | 242, 225,
319 | syl2an 596 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (2nd ‘(𝑔‘𝑏)) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) |
321 | 258, 260,
304, 271, 320 | xrlttrd 12893 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) |
322 | 317, 321 | jctild 526 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < (2nd ‘(𝑔‘𝑏)) → (((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))))) |
323 | 240, 322 | syld 47 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → (((1st
‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))))) |
324 | | simpll 764 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → (𝜑 ∧ 𝑓:𝑋⟶𝑌)) |
325 | | heicant.d |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ (𝜑 → 𝐷 ∈ (∞Met‘𝑌)) |
326 | | ffvelrn 6959 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑓:𝑋⟶𝑌 ∧ 𝑥 ∈ 𝑋) → (𝑓‘𝑥) ∈ 𝑌) |
327 | | ffvelrn 6959 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝑓:𝑋⟶𝑌 ∧ 𝑤 ∈ 𝑋) → (𝑓‘𝑤) ∈ 𝑌) |
328 | 326, 327 | anim12dan 619 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝑓:𝑋⟶𝑌 ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ((𝑓‘𝑥) ∈ 𝑌 ∧ (𝑓‘𝑤) ∈ 𝑌)) |
329 | | xmetcl 23484 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘𝑥) ∈ 𝑌 ∧ (𝑓‘𝑤) ∈ 𝑌) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ∈
ℝ*) |
330 | 329 | 3expb 1119 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ ((𝑓‘𝑥) ∈ 𝑌 ∧ (𝑓‘𝑤) ∈ 𝑌)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ∈
ℝ*) |
331 | 325, 328,
330 | syl2an 596 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ ((𝜑 ∧ (𝑓:𝑋⟶𝑌 ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋))) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ∈
ℝ*) |
332 | 331 | anassrs 468 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ∈
ℝ*) |
333 | 324, 332 | sylan 580 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ∈
ℝ*) |
334 | 333 | ad3antrrr 727 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ∈
ℝ*) |
335 | 325 | ad5antr 731 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 𝐷 ∈ (∞Met‘𝑌)) |
336 | | simp-5r 783 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 𝑓:𝑋⟶𝑌) |
337 | 336, 274 | ffvelrnd 6962 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌) |
338 | | simpllr 773 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . 43
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) → 𝑓:𝑋⟶𝑌) |
339 | 338 | ffvelrnda 6961 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑥 ∈ 𝑋) → (𝑓‘𝑥) ∈ 𝑌) |
340 | 339 | adantrr 714 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → (𝑓‘𝑥) ∈ 𝑌) |
341 | 340 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑓‘𝑥) ∈ 𝑌) |
342 | | xmetcl 23484 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌 ∧ (𝑓‘𝑥) ∈ 𝑌) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈
ℝ*) |
343 | 335, 337,
341, 342 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈
ℝ*) |
344 | 9 | rpxrd 12773 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ (𝑑 ∈ ℝ+
→ (𝑑 / 2) ∈
ℝ*) |
345 | 344 | ad4antlr 730 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑑 / 2) ∈
ℝ*) |
346 | | xrltle 12883 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢ ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ* ∧ (𝑑 / 2) ∈
ℝ*) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ≤ (𝑑 / 2))) |
347 | 343, 345,
346 | syl2anc 584 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ≤ (𝑑 / 2))) |
348 | | xmetge0 23497 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌 ∧ (𝑓‘𝑥) ∈ 𝑌) → 0 ≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
349 | 335, 337,
341, 348 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 0 ≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
350 | 9 | rpred 12772 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢ (𝑑 ∈ ℝ+
→ (𝑑 / 2) ∈
ℝ) |
351 | 350 | ad4antlr 730 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑑 / 2) ∈ ℝ) |
352 | | xrrege0 12908 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ) ∧ (0
≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ≤ (𝑑 / 2))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ) |
353 | 352 | ex 413 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ) → ((0
≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ≤ (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ)) |
354 | 343, 351,
353 | syl2anc 584 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((0 ≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ≤ (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ)) |
355 | 349, 354 | mpand 692 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ≤ (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ)) |
356 | 347, 355 | syld 47 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ)) |
357 | 356 | ad2ant2r 744 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ)) |
358 | 357 | imp 407 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ) |
359 | 338 | ffvelrnda 6961 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . 42
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ 𝑤 ∈ 𝑋) → (𝑓‘𝑤) ∈ 𝑌) |
360 | 359 | adantrl 713 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → (𝑓‘𝑤) ∈ 𝑌) |
361 | 360 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (𝑓‘𝑤) ∈ 𝑌) |
362 | | xmetcl 23484 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌 ∧ (𝑓‘𝑤) ∈ 𝑌) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈
ℝ*) |
363 | 335, 337,
361, 362 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈
ℝ*) |
364 | | xrltle 12883 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢ ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ* ∧ (𝑑 / 2) ∈
ℝ*) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ≤ (𝑑 / 2))) |
365 | 363, 345,
364 | syl2anc 584 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ≤ (𝑑 / 2))) |
366 | | xmetge0 23497 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌 ∧ (𝑓‘𝑤) ∈ 𝑌) → 0 ≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) |
367 | 335, 337,
361, 366 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → 0 ≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) |
368 | | xrrege0 12908 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . 41
⊢
(((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ) ∧ (0
≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ≤ (𝑑 / 2))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) |
369 | 368 | ex 413 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . 40
⊢ ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ* ∧ (𝑑 / 2) ∈ ℝ) → ((0
≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ≤ (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ)) |
370 | 363, 351,
369 | syl2anc 584 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((0 ≤ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ≤ (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ)) |
371 | 367, 370 | mpand 692 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ≤ (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ)) |
372 | 365, 371 | syld 47 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ)) |
373 | 372 | ad2ant2r 744 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ)) |
374 | 373 | imp 407 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) |
375 | | readdcl 10954 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) → (((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) ∈ ℝ) |
376 | 358, 374,
375 | syl2an 596 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
(((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)) ∧ (((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) ∈ ℝ) |
377 | 376 | anandis 675 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) ∈ ℝ) |
378 | 377 | rexrd 11025 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) ∈
ℝ*) |
379 | | rpxr 12739 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢ (𝑑 ∈ ℝ+
→ 𝑑 ∈
ℝ*) |
380 | 379 | ad6antlr 734 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → 𝑑 ∈ ℝ*) |
381 | | xmettri 23504 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ ((𝑓‘𝑥) ∈ 𝑌 ∧ (𝑓‘𝑤) ∈ 𝑌 ∧ (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ≤ (((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) +𝑒 ((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
382 | 335, 341,
361, 337, 381 | syl13anc 1371 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ≤ (((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) +𝑒 ((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
383 | 382 | ad2ant2r 744 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ≤ (((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) +𝑒 ((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
384 | 383 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ≤ (((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) +𝑒 ((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
385 | | xmetsym 23500 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ ((𝐷 ∈ (∞Met‘𝑌) ∧ (𝑓‘𝑥) ∈ 𝑌 ∧ (𝑓‘(1st ‘(𝑔‘𝑏))) ∈ 𝑌) → ((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
386 | 335, 341,
337, 385 | syl3anc 1370 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
387 | 386 | ad2ant2r 744 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
388 | 387 | adantr 481 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) = ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥))) |
389 | 388 | oveq1d 7290 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) +𝑒 ((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) = (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) +𝑒 ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
390 | | rexadd 12966 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢ ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) → (((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) +𝑒 ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) = (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
391 | 358, 374,
390 | syl2an 596 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
(((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2)) ∧ (((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) +𝑒 ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) = (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
392 | 391 | anandis 675 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) +𝑒 ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) = (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
393 | 389, 392 | eqtrd 2778 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘𝑥)𝐷(𝑓‘(1st ‘(𝑔‘𝑏)))) +𝑒 ((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) = (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
394 | 384, 393 | breqtrd 5100 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) ≤ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)))) |
395 | | lt2add 11460 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . 39
⊢
(((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) ∧ ((𝑑 / 2) ∈ ℝ ∧ (𝑑 / 2) ∈ ℝ)) →
((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2)))) |
396 | 395 | expcom 414 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . 38
⊢ (((𝑑 / 2) ∈ ℝ ∧
(𝑑 / 2) ∈ ℝ)
→ ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) → ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2))))) |
397 | 351, 351,
396 | syl2anc 584 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . 37
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) ∈ ℝ ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) ∈ ℝ) → ((((𝑓‘(1st
‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2))))) |
398 | 356, 372,
397 | syl2and 608 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . 36
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2))))) |
399 | 398 | pm2.43d 53 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢
((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 ∈ 𝑠) → ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2)))) |
400 | 399 | ad2ant2r 744 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2)))) |
401 | 400 | imp 407 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < ((𝑑 / 2) + (𝑑 / 2))) |
402 | | rpcn 12740 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. 35
⊢ (𝑑 ∈ ℝ+
→ 𝑑 ∈
ℂ) |
403 | 402 | 2halvesd 12219 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
34
⊢ (𝑑 ∈ ℝ+
→ ((𝑑 / 2) + (𝑑 / 2)) = 𝑑) |
404 | 403 | ad6antlr 734 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑑 / 2) + (𝑑 / 2)) = 𝑑) |
405 | 401, 404 | breqtrd 5100 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) + ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤))) < 𝑑) |
406 | 334, 378,
380, 394, 405 | xrlelttrd 12894 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) ∧ (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) |
407 | 406 | ex 413 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) |
408 | 323, 407 | imim12d 81 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
409 | 196, 408 | sylanl1 677 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢
(((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ 𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
410 | 409 | adantlrr 718 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢
(((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → (((((1st ‘(𝑔‘𝑏))𝐶𝑥) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) ∧ ((1st ‘(𝑔‘𝑏))𝐶𝑤) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏)))) → (((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑥)) < (𝑑 / 2) ∧ ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑤)) < (𝑑 / 2))) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
411 | 193, 410 | mpd 15 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢
(((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑏 ∈ 𝑠 ∧ 𝑥 ∈ 𝑏)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) |
412 | 411 | exp32 421 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → (𝑏 ∈ 𝑠 → (𝑥 ∈ 𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)))) |
413 | 174, 412 | sylan2 593 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ (∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))) ∧ 𝑏 ∈ 𝑠)) → (𝑏 ∈ 𝑠 → (𝑥 ∈ 𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)))) |
414 | 413 | expr 457 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ ∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → (𝑏 ∈ 𝑠 → (𝑏 ∈ 𝑠 → (𝑥 ∈ 𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))))) |
415 | 414 | pm2.43d 53 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) ∧ ∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → (𝑏 ∈ 𝑠 → (𝑥 ∈ 𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)))) |
416 | 415 | an32s 649 |
. . . . . . . . . . . . . . . . . . . . 21
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → (𝑏 ∈ 𝑠 → (𝑥 ∈ 𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)))) |
417 | 172, 173,
416 | rexlimd 3250 |
. . . . . . . . . . . . . . . . . . . 20
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → (∃𝑏 ∈ 𝑠 𝑥 ∈ 𝑏 → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
418 | 167, 417 | mpd 15 |
. . . . . . . . . . . . . . . . . . 19
⊢
((((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) ∧ (𝑥 ∈ 𝑋 ∧ 𝑤 ∈ 𝑋)) → ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) |
419 | 418 | ralrimivva 3123 |
. . . . . . . . . . . . . . . . . 18
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) |
420 | | breq2 5078 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (𝑧 = inf(ran ran 𝑔, ℝ, < ) → ((𝑥𝐶𝑤) < 𝑧 ↔ (𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ))) |
421 | 420 | imbi1d 342 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝑧 = inf(ran ran 𝑔, ℝ, < ) →
(((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
422 | 421 | 2ralbidv 3129 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑧 = inf(ran ran 𝑔, ℝ, < ) →
(∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
423 | 422 | rspcev 3561 |
. . . . . . . . . . . . . . . . . 18
⊢ ((inf(ran
ran 𝑔, ℝ, < )
∈ ℝ+ ∧ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < inf(ran ran 𝑔, ℝ, < ) → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) |
424 | 158, 419,
423 | syl2anc 584 |
. . . . . . . . . . . . . . . . 17
⊢
(((((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) ∧ 𝑔:𝑠⟶(𝑋 × ℝ+)) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) |
425 | 424 | expl 458 |
. . . . . . . . . . . . . . . 16
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → ((𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
426 | 425 | exlimdv 1936 |
. . . . . . . . . . . . . . 15
⊢
(((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) ∧ ∪ (MetOpen‘𝐶) = ∪ 𝑠) → (∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2)))) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
427 | 426 | expimpd 454 |
. . . . . . . . . . . . . 14
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ Fin) → ((∪ (MetOpen‘𝐶) = ∪ 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
428 | 102, 427 | sylan2 593 |
. . . . . . . . . . . . 13
⊢ ((((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) ∧ 𝑠 ∈ (𝒫
(MetOpen‘𝐶) ∩
Fin)) → ((∪ (MetOpen‘𝐶) = ∪ 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
429 | 428 | rexlimdva 3213 |
. . . . . . . . . . . 12
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) →
(∃𝑠 ∈ (𝒫
(MetOpen‘𝐶) ∩
Fin)(∪ (MetOpen‘𝐶) = ∪ 𝑠 ∧ ∃𝑔(𝑔:𝑠⟶(𝑋 × ℝ+) ∧
∀𝑏 ∈ 𝑠 (𝑏 = ((1st ‘(𝑔‘𝑏))(ball‘𝐶)(2nd ‘(𝑔‘𝑏))) ∧ ∀𝑐 ∈ 𝑋 (((1st ‘(𝑔‘𝑏))𝐶𝑐) < ((2nd ‘(𝑔‘𝑏)) + (2nd ‘(𝑔‘𝑏))) → ((𝑓‘(1st ‘(𝑔‘𝑏)))𝐷(𝑓‘𝑐)) < (𝑑 / 2))))) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
430 | 101, 429 | syld 47 |
. . . . . . . . . . 11
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) →
(∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < (𝑑 / 2)) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
431 | 15, 430 | syl5 34 |
. . . . . . . . . 10
⊢ (((𝜑 ∧ 𝑓:𝑋⟶𝑌) ∧ 𝑑 ∈ ℝ+) → (((𝑑 / 2) ∈ ℝ+
∧ ∀𝑦 ∈
ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
432 | 431 | exp4b 431 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑓:𝑋⟶𝑌) → (𝑑 ∈ ℝ+ → ((𝑑 / 2) ∈ ℝ+
→ (∀𝑦 ∈
ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))))) |
433 | 9, 432 | mpdi 45 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑓:𝑋⟶𝑌) → (𝑑 ∈ ℝ+ →
(∀𝑦 ∈
ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)))) |
434 | 433 | ralrimiv 3102 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑓:𝑋⟶𝑌) → ∀𝑑 ∈ ℝ+ (∀𝑦 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
435 | | r19.21v 3113 |
. . . . . . 7
⊢
(∀𝑑 ∈
ℝ+ (∀𝑦 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∃𝑧 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) ↔ (∀𝑦 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∀𝑑 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
436 | 434, 435 | sylib 217 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑓:𝑋⟶𝑌) → (∀𝑦 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) → ∀𝑑 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑))) |
437 | 8, 436 | impbid2 225 |
. . . . 5
⊢ ((𝜑 ∧ 𝑓:𝑋⟶𝑌) → (∀𝑑 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ∀𝑦 ∈ ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦))) |
438 | | ralcom 3166 |
. . . . 5
⊢
(∀𝑦 ∈
ℝ+ ∀𝑥 ∈ 𝑋 ∃𝑧 ∈ ℝ+ ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦) ↔ ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)) |
439 | 437, 438 | bitrdi 287 |
. . . 4
⊢ ((𝜑 ∧ 𝑓:𝑋⟶𝑌) → (∀𝑑 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑) ↔ ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦))) |
440 | 439 | pm5.32da 579 |
. . 3
⊢ (𝜑 → ((𝑓:𝑋⟶𝑌 ∧ ∀𝑑 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)) ↔ (𝑓:𝑋⟶𝑌 ∧ ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)))) |
441 | | eqid 2738 |
. . . 4
⊢
(metUnif‘𝐶) =
(metUnif‘𝐶) |
442 | | eqid 2738 |
. . . 4
⊢
(metUnif‘𝐷) =
(metUnif‘𝐷) |
443 | | heicant.y |
. . . 4
⊢ (𝜑 → 𝑌 ≠ ∅) |
444 | | xmetpsmet 23501 |
. . . . 5
⊢ (𝐶 ∈ (∞Met‘𝑋) → 𝐶 ∈ (PsMet‘𝑋)) |
445 | 18, 444 | syl 17 |
. . . 4
⊢ (𝜑 → 𝐶 ∈ (PsMet‘𝑋)) |
446 | | xmetpsmet 23501 |
. . . . 5
⊢ (𝐷 ∈ (∞Met‘𝑌) → 𝐷 ∈ (PsMet‘𝑌)) |
447 | 325, 446 | syl 17 |
. . . 4
⊢ (𝜑 → 𝐷 ∈ (PsMet‘𝑌)) |
448 | 441, 442,
128, 443, 445, 447 | metucn 23727 |
. . 3
⊢ (𝜑 → (𝑓 ∈ ((metUnif‘𝐶) Cnu(metUnif‘𝐷)) ↔ (𝑓:𝑋⟶𝑌 ∧ ∀𝑑 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑥 ∈ 𝑋 ∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑑)))) |
449 | | eqid 2738 |
. . . . 5
⊢
(MetOpen‘𝐷) =
(MetOpen‘𝐷) |
450 | 23, 449 | metcn 23699 |
. . . 4
⊢ ((𝐶 ∈ (∞Met‘𝑋) ∧ 𝐷 ∈ (∞Met‘𝑌)) → (𝑓 ∈ ((MetOpen‘𝐶) Cn (MetOpen‘𝐷)) ↔ (𝑓:𝑋⟶𝑌 ∧ ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)))) |
451 | 18, 325, 450 | syl2anc 584 |
. . 3
⊢ (𝜑 → (𝑓 ∈ ((MetOpen‘𝐶) Cn (MetOpen‘𝐷)) ↔ (𝑓:𝑋⟶𝑌 ∧ ∀𝑥 ∈ 𝑋 ∀𝑦 ∈ ℝ+ ∃𝑧 ∈ ℝ+
∀𝑤 ∈ 𝑋 ((𝑥𝐶𝑤) < 𝑧 → ((𝑓‘𝑥)𝐷(𝑓‘𝑤)) < 𝑦)))) |
452 | 440, 448,
451 | 3bitr4d 311 |
. 2
⊢ (𝜑 → (𝑓 ∈ ((metUnif‘𝐶) Cnu(metUnif‘𝐷)) ↔ 𝑓 ∈ ((MetOpen‘𝐶) Cn (MetOpen‘𝐷)))) |
453 | 452 | eqrdv 2736 |
1
⊢ (𝜑 → ((metUnif‘𝐶)
Cnu(metUnif‘𝐷)) = ((MetOpen‘𝐶) Cn (MetOpen‘𝐷))) |