Step | Hyp | Ref
| Expression |
1 | | eldm2g 4807 |
. . . 4
⊢ (𝐹 ∈ dom ⇝ →
(𝐹 ∈ dom ⇝
↔ ∃𝑦〈𝐹, 𝑦〉 ∈ ⇝ )) |
2 | 1 | ibi 175 |
. . 3
⊢ (𝐹 ∈ dom ⇝ →
∃𝑦〈𝐹, 𝑦〉 ∈ ⇝ ) |
3 | | df-br 3990 |
. . . . 5
⊢ (𝐹 ⇝ 𝑦 ↔ 〈𝐹, 𝑦〉 ∈ ⇝ ) |
4 | | climcau.1 |
. . . . . . . . 9
⊢ 𝑍 =
(ℤ≥‘𝑀) |
5 | | simpll 524 |
. . . . . . . . 9
⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) → 𝑀 ∈
ℤ) |
6 | | rphalfcl 9638 |
. . . . . . . . . 10
⊢ (𝑥 ∈ ℝ+
→ (𝑥 / 2) ∈
ℝ+) |
7 | 6 | adantl 275 |
. . . . . . . . 9
⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) → (𝑥 / 2) ∈
ℝ+) |
8 | | eqidd 2171 |
. . . . . . . . 9
⊢ ((((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) ∧ 𝑘 ∈ 𝑍) → (𝐹‘𝑘) = (𝐹‘𝑘)) |
9 | | simplr 525 |
. . . . . . . . 9
⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) → 𝐹 ⇝ 𝑦) |
10 | 4, 5, 7, 8, 9 | climi 11250 |
. . . . . . . 8
⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) →
∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2))) |
11 | | eluzelz 9496 |
. . . . . . . . . . . . . 14
⊢ (𝑗 ∈
(ℤ≥‘𝑀) → 𝑗 ∈ ℤ) |
12 | | uzid 9501 |
. . . . . . . . . . . . . 14
⊢ (𝑗 ∈ ℤ → 𝑗 ∈
(ℤ≥‘𝑗)) |
13 | 11, 12 | syl 14 |
. . . . . . . . . . . . 13
⊢ (𝑗 ∈
(ℤ≥‘𝑀) → 𝑗 ∈ (ℤ≥‘𝑗)) |
14 | 13, 4 | eleq2s 2265 |
. . . . . . . . . . . 12
⊢ (𝑗 ∈ 𝑍 → 𝑗 ∈ (ℤ≥‘𝑗)) |
15 | 14 | adantl 275 |
. . . . . . . . . . 11
⊢ ((((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) ∧ 𝑗 ∈ 𝑍) → 𝑗 ∈ (ℤ≥‘𝑗)) |
16 | | fveq2 5496 |
. . . . . . . . . . . . . 14
⊢ (𝑘 = 𝑗 → (𝐹‘𝑘) = (𝐹‘𝑗)) |
17 | 16 | eleq1d 2239 |
. . . . . . . . . . . . 13
⊢ (𝑘 = 𝑗 → ((𝐹‘𝑘) ∈ ℂ ↔ (𝐹‘𝑗) ∈ ℂ)) |
18 | 16 | oveq1d 5868 |
. . . . . . . . . . . . . . 15
⊢ (𝑘 = 𝑗 → ((𝐹‘𝑘) − 𝑦) = ((𝐹‘𝑗) − 𝑦)) |
19 | 18 | fveq2d 5500 |
. . . . . . . . . . . . . 14
⊢ (𝑘 = 𝑗 → (abs‘((𝐹‘𝑘) − 𝑦)) = (abs‘((𝐹‘𝑗) − 𝑦))) |
20 | 19 | breq1d 3999 |
. . . . . . . . . . . . 13
⊢ (𝑘 = 𝑗 → ((abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2) ↔ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2))) |
21 | 17, 20 | anbi12d 470 |
. . . . . . . . . . . 12
⊢ (𝑘 = 𝑗 → (((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2)) ↔ ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2)))) |
22 | 21 | rspcv 2830 |
. . . . . . . . . . 11
⊢ (𝑗 ∈
(ℤ≥‘𝑗) → (∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2)) → ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2)))) |
23 | 15, 22 | syl 14 |
. . . . . . . . . 10
⊢ ((((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) ∧ 𝑗 ∈ 𝑍) → (∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2)) → ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2)))) |
24 | | rpre 9617 |
. . . . . . . . . . . 12
⊢ (𝑥 ∈ ℝ+
→ 𝑥 ∈
ℝ) |
25 | 24 | ad2antlr 486 |
. . . . . . . . . . 11
⊢ ((((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) ∧ 𝑗 ∈ 𝑍) → 𝑥 ∈ ℝ) |
26 | | simpllr 529 |
. . . . . . . . . . . 12
⊢ ((((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) ∧ 𝑗 ∈ 𝑍) → 𝐹 ⇝ 𝑦) |
27 | | climcl 11245 |
. . . . . . . . . . . 12
⊢ (𝐹 ⇝ 𝑦 → 𝑦 ∈ ℂ) |
28 | 26, 27 | syl 14 |
. . . . . . . . . . 11
⊢ ((((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) ∧ 𝑗 ∈ 𝑍) → 𝑦 ∈ ℂ) |
29 | | simprl 526 |
. . . . . . . . . . . . . . . 16
⊢ ((((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) ∧ ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2))) ∧ ((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2))) → (𝐹‘𝑘) ∈ ℂ) |
30 | | simplrl 530 |
. . . . . . . . . . . . . . . 16
⊢ ((((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) ∧ ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2))) ∧ ((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2))) → (𝐹‘𝑗) ∈ ℂ) |
31 | | simpllr 529 |
. . . . . . . . . . . . . . . 16
⊢ ((((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) ∧ ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2))) ∧ ((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2))) → 𝑦 ∈ ℂ) |
32 | | simplll 528 |
. . . . . . . . . . . . . . . 16
⊢ ((((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) ∧ ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2))) ∧ ((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2))) → 𝑥 ∈ ℝ) |
33 | | simprr 527 |
. . . . . . . . . . . . . . . 16
⊢ ((((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) ∧ ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2))) ∧ ((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2))) → (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2)) |
34 | 31, 30 | abssubd 11157 |
. . . . . . . . . . . . . . . . 17
⊢ ((((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) ∧ ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2))) ∧ ((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2))) → (abs‘(𝑦 − (𝐹‘𝑗))) = (abs‘((𝐹‘𝑗) − 𝑦))) |
35 | | simplrr 531 |
. . . . . . . . . . . . . . . . 17
⊢ ((((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) ∧ ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2))) ∧ ((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2))) → (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2)) |
36 | 34, 35 | eqbrtrd 4011 |
. . . . . . . . . . . . . . . 16
⊢ ((((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) ∧ ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2))) ∧ ((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2))) → (abs‘(𝑦 − (𝐹‘𝑗))) < (𝑥 / 2)) |
37 | 29, 30, 31, 32, 33, 36 | abs3lemd 11165 |
. . . . . . . . . . . . . . 15
⊢ ((((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) ∧ ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2))) ∧ ((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2))) → (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥) |
38 | 37 | ex 114 |
. . . . . . . . . . . . . 14
⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) ∧ ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2))) → (((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2)) → (abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥)) |
39 | 38 | ralimdv 2538 |
. . . . . . . . . . . . 13
⊢ (((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) ∧ ((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2))) → (∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2)) → ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥)) |
40 | 39 | ex 114 |
. . . . . . . . . . . 12
⊢ ((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) → (((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2)) → (∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2)) → ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥))) |
41 | 40 | com23 78 |
. . . . . . . . . . 11
⊢ ((𝑥 ∈ ℝ ∧ 𝑦 ∈ ℂ) →
(∀𝑘 ∈
(ℤ≥‘𝑗)((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2)) → (((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2)) → ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥))) |
42 | 25, 28, 41 | syl2anc 409 |
. . . . . . . . . 10
⊢ ((((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) ∧ 𝑗 ∈ 𝑍) → (∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2)) → (((𝐹‘𝑗) ∈ ℂ ∧ (abs‘((𝐹‘𝑗) − 𝑦)) < (𝑥 / 2)) → ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥))) |
43 | 23, 42 | mpdd 41 |
. . . . . . . . 9
⊢ ((((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) ∧ 𝑗 ∈ 𝑍) → (∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2)) → ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥)) |
44 | 43 | reximdva 2572 |
. . . . . . . 8
⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) →
(∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)((𝐹‘𝑘) ∈ ℂ ∧ (abs‘((𝐹‘𝑘) − 𝑦)) < (𝑥 / 2)) → ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥)) |
45 | 10, 44 | mpd 13 |
. . . . . . 7
⊢ (((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) ∧ 𝑥 ∈ ℝ+) →
∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥) |
46 | 45 | ralrimiva 2543 |
. . . . . 6
⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ⇝ 𝑦) → ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥) |
47 | 46 | ex 114 |
. . . . 5
⊢ (𝑀 ∈ ℤ → (𝐹 ⇝ 𝑦 → ∀𝑥 ∈ ℝ+ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥)) |
48 | 3, 47 | syl5bir 152 |
. . . 4
⊢ (𝑀 ∈ ℤ →
(〈𝐹, 𝑦〉 ∈ ⇝ →
∀𝑥 ∈
ℝ+ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥)) |
49 | 48 | exlimdv 1812 |
. . 3
⊢ (𝑀 ∈ ℤ →
(∃𝑦〈𝐹, 𝑦〉 ∈ ⇝ → ∀𝑥 ∈ ℝ+
∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥)) |
50 | 2, 49 | syl5 32 |
. 2
⊢ (𝑀 ∈ ℤ → (𝐹 ∈ dom ⇝ →
∀𝑥 ∈
ℝ+ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥)) |
51 | 50 | imp 123 |
1
⊢ ((𝑀 ∈ ℤ ∧ 𝐹 ∈ dom ⇝ ) →
∀𝑥 ∈
ℝ+ ∃𝑗 ∈ 𝑍 ∀𝑘 ∈ (ℤ≥‘𝑗)(abs‘((𝐹‘𝑘) − (𝐹‘𝑗))) < 𝑥) |