Step | Hyp | Ref
| Expression |
1 | | cnrest.1 |
. . . . 5
⊢ 𝑋 = ∪
𝐽 |
2 | | eqid 2170 |
. . . . 5
⊢ ∪ 𝐾 =
∪ 𝐾 |
3 | 1, 2 | cnf 12998 |
. . . 4
⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐹:𝑋⟶∪ 𝐾) |
4 | 3 | adantr 274 |
. . 3
⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) → 𝐹:𝑋⟶∪ 𝐾) |
5 | | simpr 109 |
. . 3
⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) → 𝐴 ⊆ 𝑋) |
6 | 4, 5 | fssresd 5374 |
. 2
⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) → (𝐹 ↾ 𝐴):𝐴⟶∪ 𝐾) |
7 | | cnvresima 5100 |
. . . 4
⊢ (◡(𝐹 ↾ 𝐴) “ 𝑜) = ((◡𝐹 “ 𝑜) ∩ 𝐴) |
8 | | cntop1 12995 |
. . . . . . 7
⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐽 ∈ Top) |
9 | 8 | adantr 274 |
. . . . . 6
⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) → 𝐽 ∈ Top) |
10 | 9 | adantr 274 |
. . . . 5
⊢ (((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) ∧ 𝑜 ∈ 𝐾) → 𝐽 ∈ Top) |
11 | 1 | topopn 12800 |
. . . . . . . 8
⊢ (𝐽 ∈ Top → 𝑋 ∈ 𝐽) |
12 | | ssexg 4128 |
. . . . . . . . 9
⊢ ((𝐴 ⊆ 𝑋 ∧ 𝑋 ∈ 𝐽) → 𝐴 ∈ V) |
13 | 12 | ancoms 266 |
. . . . . . . 8
⊢ ((𝑋 ∈ 𝐽 ∧ 𝐴 ⊆ 𝑋) → 𝐴 ∈ V) |
14 | 11, 13 | sylan 281 |
. . . . . . 7
⊢ ((𝐽 ∈ Top ∧ 𝐴 ⊆ 𝑋) → 𝐴 ∈ V) |
15 | 8, 14 | sylan 281 |
. . . . . 6
⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) → 𝐴 ∈ V) |
16 | 15 | adantr 274 |
. . . . 5
⊢ (((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) ∧ 𝑜 ∈ 𝐾) → 𝐴 ∈ V) |
17 | | cnima 13014 |
. . . . . 6
⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝑜 ∈ 𝐾) → (◡𝐹 “ 𝑜) ∈ 𝐽) |
18 | 17 | adantlr 474 |
. . . . 5
⊢ (((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) ∧ 𝑜 ∈ 𝐾) → (◡𝐹 “ 𝑜) ∈ 𝐽) |
19 | | elrestr 12587 |
. . . . 5
⊢ ((𝐽 ∈ Top ∧ 𝐴 ∈ V ∧ (◡𝐹 “ 𝑜) ∈ 𝐽) → ((◡𝐹 “ 𝑜) ∩ 𝐴) ∈ (𝐽 ↾t 𝐴)) |
20 | 10, 16, 18, 19 | syl3anc 1233 |
. . . 4
⊢ (((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) ∧ 𝑜 ∈ 𝐾) → ((◡𝐹 “ 𝑜) ∩ 𝐴) ∈ (𝐽 ↾t 𝐴)) |
21 | 7, 20 | eqeltrid 2257 |
. . 3
⊢ (((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) ∧ 𝑜 ∈ 𝐾) → (◡(𝐹 ↾ 𝐴) “ 𝑜) ∈ (𝐽 ↾t 𝐴)) |
22 | 21 | ralrimiva 2543 |
. 2
⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) → ∀𝑜 ∈ 𝐾 (◡(𝐹 ↾ 𝐴) “ 𝑜) ∈ (𝐽 ↾t 𝐴)) |
23 | 1 | toptopon 12810 |
. . . . 5
⊢ (𝐽 ∈ Top ↔ 𝐽 ∈ (TopOn‘𝑋)) |
24 | 8, 23 | sylib 121 |
. . . 4
⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐽 ∈ (TopOn‘𝑋)) |
25 | | resttopon 12965 |
. . . 4
⊢ ((𝐽 ∈ (TopOn‘𝑋) ∧ 𝐴 ⊆ 𝑋) → (𝐽 ↾t 𝐴) ∈ (TopOn‘𝐴)) |
26 | 24, 25 | sylan 281 |
. . 3
⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) → (𝐽 ↾t 𝐴) ∈ (TopOn‘𝐴)) |
27 | | cntop2 12996 |
. . . . 5
⊢ (𝐹 ∈ (𝐽 Cn 𝐾) → 𝐾 ∈ Top) |
28 | 27 | adantr 274 |
. . . 4
⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) → 𝐾 ∈ Top) |
29 | 2 | toptopon 12810 |
. . . 4
⊢ (𝐾 ∈ Top ↔ 𝐾 ∈ (TopOn‘∪ 𝐾)) |
30 | 28, 29 | sylib 121 |
. . 3
⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) → 𝐾 ∈ (TopOn‘∪ 𝐾)) |
31 | | iscn 12991 |
. . 3
⊢ (((𝐽 ↾t 𝐴) ∈ (TopOn‘𝐴) ∧ 𝐾 ∈ (TopOn‘∪ 𝐾))
→ ((𝐹 ↾ 𝐴) ∈ ((𝐽 ↾t 𝐴) Cn 𝐾) ↔ ((𝐹 ↾ 𝐴):𝐴⟶∪ 𝐾 ∧ ∀𝑜 ∈ 𝐾 (◡(𝐹 ↾ 𝐴) “ 𝑜) ∈ (𝐽 ↾t 𝐴)))) |
32 | 26, 30, 31 | syl2anc 409 |
. 2
⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) → ((𝐹 ↾ 𝐴) ∈ ((𝐽 ↾t 𝐴) Cn 𝐾) ↔ ((𝐹 ↾ 𝐴):𝐴⟶∪ 𝐾 ∧ ∀𝑜 ∈ 𝐾 (◡(𝐹 ↾ 𝐴) “ 𝑜) ∈ (𝐽 ↾t 𝐴)))) |
33 | 6, 22, 32 | mpbir2and 939 |
1
⊢ ((𝐹 ∈ (𝐽 Cn 𝐾) ∧ 𝐴 ⊆ 𝑋) → (𝐹 ↾ 𝐴) ∈ ((𝐽 ↾t 𝐴) Cn 𝐾)) |