Step | Hyp | Ref
| Expression |
1 | | sxbrsiga.0 |
. . . . . 6
⊢ 𝐽 = (topGen‘ran
(,)) |
2 | | dya2ioc.1 |
. . . . . 6
⊢ 𝐼 = (𝑥 ∈ ℤ, 𝑛 ∈ ℤ ↦ ((𝑥 / (2↑𝑛))[,)((𝑥 + 1) / (2↑𝑛)))) |
3 | | eqid 2738 |
. . . . . 6
⊢
(⌊‘(1 − (2 logb 𝑑))) = (⌊‘(1 − (2
logb 𝑑))) |
4 | 1, 2, 3 | dya2icoseg 32230 |
. . . . 5
⊢ ((𝑋 ∈ ℝ ∧ 𝑑 ∈ ℝ+)
→ ∃𝑏 ∈ ran
𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)))) |
5 | 4 | ralrimiva 3113 |
. . . 4
⊢ (𝑋 ∈ ℝ →
∀𝑑 ∈
ℝ+ ∃𝑏 ∈ ran 𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)))) |
6 | 5 | 3ad2ant1 1132 |
. . 3
⊢ ((𝑋 ∈ ℝ ∧ 𝐸 ∈ ran (,) ∧ 𝑋 ∈ 𝐸) → ∀𝑑 ∈ ℝ+ ∃𝑏 ∈ ran 𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)))) |
7 | | simp3 1137 |
. . . . 5
⊢ ((𝑋 ∈ ℝ ∧ 𝐸 ∈ ran (,) ∧ 𝑋 ∈ 𝐸) → 𝑋 ∈ 𝐸) |
8 | | iooex 13090 |
. . . . . . . . . 10
⊢ (,)
∈ V |
9 | 8 | rnex 7750 |
. . . . . . . . 9
⊢ ran (,)
∈ V |
10 | | bastg 22104 |
. . . . . . . . 9
⊢ (ran (,)
∈ V → ran (,) ⊆ (topGen‘ran (,))) |
11 | 9, 10 | ax-mp 5 |
. . . . . . . 8
⊢ ran (,)
⊆ (topGen‘ran (,)) |
12 | | simp2 1136 |
. . . . . . . 8
⊢ ((𝑋 ∈ ℝ ∧ 𝐸 ∈ ran (,) ∧ 𝑋 ∈ 𝐸) → 𝐸 ∈ ran (,)) |
13 | 11, 12 | sselid 3919 |
. . . . . . 7
⊢ ((𝑋 ∈ ℝ ∧ 𝐸 ∈ ran (,) ∧ 𝑋 ∈ 𝐸) → 𝐸 ∈ (topGen‘ran
(,))) |
14 | 13, 1 | eleqtrrdi 2850 |
. . . . . 6
⊢ ((𝑋 ∈ ℝ ∧ 𝐸 ∈ ran (,) ∧ 𝑋 ∈ 𝐸) → 𝐸 ∈ 𝐽) |
15 | | eqid 2738 |
. . . . . . . . 9
⊢ ((abs
∘ − ) ↾ (ℝ × ℝ)) = ((abs ∘ − )
↾ (ℝ × ℝ)) |
16 | 15 | rexmet 23942 |
. . . . . . . 8
⊢ ((abs
∘ − ) ↾ (ℝ × ℝ)) ∈
(∞Met‘ℝ) |
17 | | recms 24532 |
. . . . . . . . . . 11
⊢
ℝfld ∈ CMetSp |
18 | | cmsms 24500 |
. . . . . . . . . . 11
⊢
(ℝfld ∈ CMetSp → ℝfld ∈
MetSp) |
19 | | msxms 23595 |
. . . . . . . . . . 11
⊢
(ℝfld ∈ MetSp → ℝfld ∈
∞MetSp) |
20 | 17, 18, 19 | mp2b 10 |
. . . . . . . . . 10
⊢
ℝfld ∈ ∞MetSp |
21 | | retopn 24531 |
. . . . . . . . . . . 12
⊢
(topGen‘ran (,)) =
(TopOpen‘ℝfld) |
22 | 1, 21 | eqtri 2766 |
. . . . . . . . . . 11
⊢ 𝐽 =
(TopOpen‘ℝfld) |
23 | | rebase 20799 |
. . . . . . . . . . 11
⊢ ℝ =
(Base‘ℝfld) |
24 | | reds 20809 |
. . . . . . . . . . . 12
⊢ (abs
∘ − ) = (dist‘ℝfld) |
25 | 24 | reseq1i 5881 |
. . . . . . . . . . 11
⊢ ((abs
∘ − ) ↾ (ℝ × ℝ)) =
((dist‘ℝfld) ↾ (ℝ ×
ℝ)) |
26 | 22, 23, 25 | xmstopn 23592 |
. . . . . . . . . 10
⊢
(ℝfld ∈ ∞MetSp → 𝐽 = (MetOpen‘((abs ∘ − )
↾ (ℝ × ℝ)))) |
27 | 20, 26 | ax-mp 5 |
. . . . . . . . 9
⊢ 𝐽 = (MetOpen‘((abs ∘
− ) ↾ (ℝ × ℝ))) |
28 | 27 | elmopn2 23586 |
. . . . . . . 8
⊢ (((abs
∘ − ) ↾ (ℝ × ℝ)) ∈
(∞Met‘ℝ) → (𝐸 ∈ 𝐽 ↔ (𝐸 ⊆ ℝ ∧ ∀𝑥 ∈ 𝐸 ∃𝑑 ∈ ℝ+ (𝑥(ball‘((abs ∘
− ) ↾ (ℝ × ℝ)))𝑑) ⊆ 𝐸))) |
29 | 16, 28 | ax-mp 5 |
. . . . . . 7
⊢ (𝐸 ∈ 𝐽 ↔ (𝐸 ⊆ ℝ ∧ ∀𝑥 ∈ 𝐸 ∃𝑑 ∈ ℝ+ (𝑥(ball‘((abs ∘
− ) ↾ (ℝ × ℝ)))𝑑) ⊆ 𝐸)) |
30 | 29 | simprbi 497 |
. . . . . 6
⊢ (𝐸 ∈ 𝐽 → ∀𝑥 ∈ 𝐸 ∃𝑑 ∈ ℝ+ (𝑥(ball‘((abs ∘
− ) ↾ (ℝ × ℝ)))𝑑) ⊆ 𝐸) |
31 | 14, 30 | syl 17 |
. . . . 5
⊢ ((𝑋 ∈ ℝ ∧ 𝐸 ∈ ran (,) ∧ 𝑋 ∈ 𝐸) → ∀𝑥 ∈ 𝐸 ∃𝑑 ∈ ℝ+ (𝑥(ball‘((abs ∘
− ) ↾ (ℝ × ℝ)))𝑑) ⊆ 𝐸) |
32 | | oveq1 7275 |
. . . . . . . 8
⊢ (𝑥 = 𝑋 → (𝑥(ball‘((abs ∘ − ) ↾
(ℝ × ℝ)))𝑑) = (𝑋(ball‘((abs ∘ − ) ↾
(ℝ × ℝ)))𝑑)) |
33 | 32 | sseq1d 3952 |
. . . . . . 7
⊢ (𝑥 = 𝑋 → ((𝑥(ball‘((abs ∘ − ) ↾
(ℝ × ℝ)))𝑑) ⊆ 𝐸 ↔ (𝑋(ball‘((abs ∘ − ) ↾
(ℝ × ℝ)))𝑑) ⊆ 𝐸)) |
34 | 33 | rexbidv 3224 |
. . . . . 6
⊢ (𝑥 = 𝑋 → (∃𝑑 ∈ ℝ+ (𝑥(ball‘((abs ∘
− ) ↾ (ℝ × ℝ)))𝑑) ⊆ 𝐸 ↔ ∃𝑑 ∈ ℝ+ (𝑋(ball‘((abs ∘
− ) ↾ (ℝ × ℝ)))𝑑) ⊆ 𝐸)) |
35 | 34 | rspcva 3558 |
. . . . 5
⊢ ((𝑋 ∈ 𝐸 ∧ ∀𝑥 ∈ 𝐸 ∃𝑑 ∈ ℝ+ (𝑥(ball‘((abs ∘
− ) ↾ (ℝ × ℝ)))𝑑) ⊆ 𝐸) → ∃𝑑 ∈ ℝ+ (𝑋(ball‘((abs ∘
− ) ↾ (ℝ × ℝ)))𝑑) ⊆ 𝐸) |
36 | 7, 31, 35 | syl2anc 584 |
. . . 4
⊢ ((𝑋 ∈ ℝ ∧ 𝐸 ∈ ran (,) ∧ 𝑋 ∈ 𝐸) → ∃𝑑 ∈ ℝ+ (𝑋(ball‘((abs ∘
− ) ↾ (ℝ × ℝ)))𝑑) ⊆ 𝐸) |
37 | | rpre 12726 |
. . . . . . 7
⊢ (𝑑 ∈ ℝ+
→ 𝑑 ∈
ℝ) |
38 | 15 | bl2ioo 23943 |
. . . . . . . 8
⊢ ((𝑋 ∈ ℝ ∧ 𝑑 ∈ ℝ) → (𝑋(ball‘((abs ∘
− ) ↾ (ℝ × ℝ)))𝑑) = ((𝑋 − 𝑑)(,)(𝑋 + 𝑑))) |
39 | 38 | sseq1d 3952 |
. . . . . . 7
⊢ ((𝑋 ∈ ℝ ∧ 𝑑 ∈ ℝ) → ((𝑋(ball‘((abs ∘
− ) ↾ (ℝ × ℝ)))𝑑) ⊆ 𝐸 ↔ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸)) |
40 | 37, 39 | sylan2 593 |
. . . . . 6
⊢ ((𝑋 ∈ ℝ ∧ 𝑑 ∈ ℝ+)
→ ((𝑋(ball‘((abs
∘ − ) ↾ (ℝ × ℝ)))𝑑) ⊆ 𝐸 ↔ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸)) |
41 | 40 | rexbidva 3223 |
. . . . 5
⊢ (𝑋 ∈ ℝ →
(∃𝑑 ∈
ℝ+ (𝑋(ball‘((abs ∘ − ) ↾
(ℝ × ℝ)))𝑑) ⊆ 𝐸 ↔ ∃𝑑 ∈ ℝ+ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸)) |
42 | 41 | 3ad2ant1 1132 |
. . . 4
⊢ ((𝑋 ∈ ℝ ∧ 𝐸 ∈ ran (,) ∧ 𝑋 ∈ 𝐸) → (∃𝑑 ∈ ℝ+ (𝑋(ball‘((abs ∘
− ) ↾ (ℝ × ℝ)))𝑑) ⊆ 𝐸 ↔ ∃𝑑 ∈ ℝ+ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸)) |
43 | 36, 42 | mpbid 231 |
. . 3
⊢ ((𝑋 ∈ ℝ ∧ 𝐸 ∈ ran (,) ∧ 𝑋 ∈ 𝐸) → ∃𝑑 ∈ ℝ+ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸) |
44 | | r19.29 3182 |
. . 3
⊢
((∀𝑑 ∈
ℝ+ ∃𝑏 ∈ ran 𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑))) ∧ ∃𝑑 ∈ ℝ+ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸) → ∃𝑑 ∈ ℝ+ (∃𝑏 ∈ ran 𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑))) ∧ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸)) |
45 | 6, 43, 44 | syl2anc 584 |
. 2
⊢ ((𝑋 ∈ ℝ ∧ 𝐸 ∈ ran (,) ∧ 𝑋 ∈ 𝐸) → ∃𝑑 ∈ ℝ+ (∃𝑏 ∈ ran 𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑))) ∧ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸)) |
46 | | r19.41v 3274 |
. . . 4
⊢
(∃𝑏 ∈ ran
𝐼((𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑))) ∧ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸) ↔ (∃𝑏 ∈ ran 𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑))) ∧ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸)) |
47 | | sstr 3929 |
. . . . . . 7
⊢ ((𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ∧ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸) → 𝑏 ⊆ 𝐸) |
48 | 47 | anim2i 617 |
. . . . . 6
⊢ ((𝑋 ∈ 𝑏 ∧ (𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ∧ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸)) → (𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ 𝐸)) |
49 | 48 | anassrs 468 |
. . . . 5
⊢ (((𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑))) ∧ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸) → (𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ 𝐸)) |
50 | 49 | reximi 3176 |
. . . 4
⊢
(∃𝑏 ∈ ran
𝐼((𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑))) ∧ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸) → ∃𝑏 ∈ ran 𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ 𝐸)) |
51 | 46, 50 | sylbir 234 |
. . 3
⊢
((∃𝑏 ∈
ran 𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑))) ∧ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸) → ∃𝑏 ∈ ran 𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ 𝐸)) |
52 | 51 | rexlimivw 3209 |
. 2
⊢
(∃𝑑 ∈
ℝ+ (∃𝑏 ∈ ran 𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑))) ∧ ((𝑋 − 𝑑)(,)(𝑋 + 𝑑)) ⊆ 𝐸) → ∃𝑏 ∈ ran 𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ 𝐸)) |
53 | 45, 52 | syl 17 |
1
⊢ ((𝑋 ∈ ℝ ∧ 𝐸 ∈ ran (,) ∧ 𝑋 ∈ 𝐸) → ∃𝑏 ∈ ran 𝐼(𝑋 ∈ 𝑏 ∧ 𝑏 ⊆ 𝐸)) |