Step | Hyp | Ref
| Expression |
1 | | limccl.f |
. . . . . . . 8
⊢ (𝜑 → 𝐹:𝐴⟶ℂ) |
2 | | fdm 5964 |
. . . . . . . 8
⊢ (𝐹:𝐴⟶ℂ → dom 𝐹 = 𝐴) |
3 | 1, 2 | syl 17 |
. . . . . . 7
⊢ (𝜑 → dom 𝐹 = 𝐴) |
4 | 3 | adantr 480 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑥 ∈ (𝐹 limℂ 𝐵)) → dom 𝐹 = 𝐴) |
5 | | limcrcl 23444 |
. . . . . . . 8
⊢ (𝑥 ∈ (𝐹 limℂ 𝐵) → (𝐹:dom 𝐹⟶ℂ ∧ dom 𝐹 ⊆ ℂ ∧ 𝐵 ∈ ℂ)) |
6 | 5 | adantl 481 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑥 ∈ (𝐹 limℂ 𝐵)) → (𝐹:dom 𝐹⟶ℂ ∧ dom 𝐹 ⊆ ℂ ∧ 𝐵 ∈ ℂ)) |
7 | 6 | simp2d 1067 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑥 ∈ (𝐹 limℂ 𝐵)) → dom 𝐹 ⊆ ℂ) |
8 | 4, 7 | eqsstr3d 3603 |
. . . . 5
⊢ ((𝜑 ∧ 𝑥 ∈ (𝐹 limℂ 𝐵)) → 𝐴 ⊆ ℂ) |
9 | 6 | simp3d 1068 |
. . . . 5
⊢ ((𝜑 ∧ 𝑥 ∈ (𝐹 limℂ 𝐵)) → 𝐵 ∈ ℂ) |
10 | 8, 9 | jca 553 |
. . . 4
⊢ ((𝜑 ∧ 𝑥 ∈ (𝐹 limℂ 𝐵)) → (𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ)) |
11 | 10 | ex 449 |
. . 3
⊢ (𝜑 → (𝑥 ∈ (𝐹 limℂ 𝐵) → (𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ))) |
12 | | undif1 3995 |
. . . . . . 7
⊢ ((𝐴 ∖ {𝐵}) ∪ {𝐵}) = (𝐴 ∪ {𝐵}) |
13 | | difss 3699 |
. . . . . . . . . . . 12
⊢ (𝐴 ∖ {𝐵}) ⊆ 𝐴 |
14 | | fssres 5983 |
. . . . . . . . . . . 12
⊢ ((𝐹:𝐴⟶ℂ ∧ (𝐴 ∖ {𝐵}) ⊆ 𝐴) → (𝐹 ↾ (𝐴 ∖ {𝐵})):(𝐴 ∖ {𝐵})⟶ℂ) |
15 | 1, 13, 14 | sylancl 693 |
. . . . . . . . . . 11
⊢ (𝜑 → (𝐹 ↾ (𝐴 ∖ {𝐵})):(𝐴 ∖ {𝐵})⟶ℂ) |
16 | | fdm 5964 |
. . . . . . . . . . 11
⊢ ((𝐹 ↾ (𝐴 ∖ {𝐵})):(𝐴 ∖ {𝐵})⟶ℂ → dom (𝐹 ↾ (𝐴 ∖ {𝐵})) = (𝐴 ∖ {𝐵})) |
17 | 15, 16 | syl 17 |
. . . . . . . . . 10
⊢ (𝜑 → dom (𝐹 ↾ (𝐴 ∖ {𝐵})) = (𝐴 ∖ {𝐵})) |
18 | 17 | adantr 480 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵)) → dom (𝐹 ↾ (𝐴 ∖ {𝐵})) = (𝐴 ∖ {𝐵})) |
19 | | limcrcl 23444 |
. . . . . . . . . . 11
⊢ (𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵) → ((𝐹 ↾ (𝐴 ∖ {𝐵})):dom (𝐹 ↾ (𝐴 ∖ {𝐵}))⟶ℂ ∧ dom (𝐹 ↾ (𝐴 ∖ {𝐵})) ⊆ ℂ ∧ 𝐵 ∈ ℂ)) |
20 | 19 | adantl 481 |
. . . . . . . . . 10
⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵)) → ((𝐹 ↾ (𝐴 ∖ {𝐵})):dom (𝐹 ↾ (𝐴 ∖ {𝐵}))⟶ℂ ∧ dom (𝐹 ↾ (𝐴 ∖ {𝐵})) ⊆ ℂ ∧ 𝐵 ∈ ℂ)) |
21 | 20 | simp2d 1067 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵)) → dom (𝐹 ↾ (𝐴 ∖ {𝐵})) ⊆ ℂ) |
22 | 18, 21 | eqsstr3d 3603 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵)) → (𝐴 ∖ {𝐵}) ⊆ ℂ) |
23 | 20 | simp3d 1068 |
. . . . . . . . 9
⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵)) → 𝐵 ∈ ℂ) |
24 | 23 | snssd 4281 |
. . . . . . . 8
⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵)) → {𝐵} ⊆ ℂ) |
25 | 22, 24 | unssd 3751 |
. . . . . . 7
⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵)) → ((𝐴 ∖ {𝐵}) ∪ {𝐵}) ⊆ ℂ) |
26 | 12, 25 | syl5eqssr 3613 |
. . . . . 6
⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵)) → (𝐴 ∪ {𝐵}) ⊆ ℂ) |
27 | 26 | unssad 3752 |
. . . . 5
⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵)) → 𝐴 ⊆ ℂ) |
28 | 27, 23 | jca 553 |
. . . 4
⊢ ((𝜑 ∧ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵)) → (𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ)) |
29 | 28 | ex 449 |
. . 3
⊢ (𝜑 → (𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵) → (𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ))) |
30 | | eqid 2610 |
. . . . . 6
⊢
((TopOpen‘ℂfld) ↾t (𝐴 ∪ {𝐵})) = ((TopOpen‘ℂfld)
↾t (𝐴
∪ {𝐵})) |
31 | | eqid 2610 |
. . . . . 6
⊢
(TopOpen‘ℂfld) =
(TopOpen‘ℂfld) |
32 | | eqid 2610 |
. . . . . 6
⊢ (𝑧 ∈ (𝐴 ∪ {𝐵}) ↦ if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧))) = (𝑧 ∈ (𝐴 ∪ {𝐵}) ↦ if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧))) |
33 | 1 | adantr 480 |
. . . . . 6
⊢ ((𝜑 ∧ (𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ)) → 𝐹:𝐴⟶ℂ) |
34 | | simprl 790 |
. . . . . 6
⊢ ((𝜑 ∧ (𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ)) → 𝐴 ⊆ ℂ) |
35 | | simprr 792 |
. . . . . 6
⊢ ((𝜑 ∧ (𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ)) → 𝐵 ∈ ℂ) |
36 | 30, 31, 32, 33, 34, 35 | ellimc 23443 |
. . . . 5
⊢ ((𝜑 ∧ (𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ)) → (𝑥 ∈ (𝐹 limℂ 𝐵) ↔ (𝑧 ∈ (𝐴 ∪ {𝐵}) ↦ if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧))) ∈
((((TopOpen‘ℂfld) ↾t (𝐴 ∪ {𝐵})) CnP
(TopOpen‘ℂfld))‘𝐵))) |
37 | 12 | eqcomi 2619 |
. . . . . . 7
⊢ (𝐴 ∪ {𝐵}) = ((𝐴 ∖ {𝐵}) ∪ {𝐵}) |
38 | 37 | oveq2i 6560 |
. . . . . 6
⊢
((TopOpen‘ℂfld) ↾t (𝐴 ∪ {𝐵})) = ((TopOpen‘ℂfld)
↾t ((𝐴
∖ {𝐵}) ∪ {𝐵})) |
39 | | eqid 2610 |
. . . . . . . 8
⊢ if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧)) = if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧)) |
40 | 37, 39 | mpteq12i 4670 |
. . . . . . 7
⊢ (𝑧 ∈ (𝐴 ∪ {𝐵}) ↦ if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧))) = (𝑧 ∈ ((𝐴 ∖ {𝐵}) ∪ {𝐵}) ↦ if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧))) |
41 | | elun 3715 |
. . . . . . . . 9
⊢ (𝑧 ∈ ((𝐴 ∖ {𝐵}) ∪ {𝐵}) ↔ (𝑧 ∈ (𝐴 ∖ {𝐵}) ∨ 𝑧 ∈ {𝐵})) |
42 | | velsn 4141 |
. . . . . . . . . . 11
⊢ (𝑧 ∈ {𝐵} ↔ 𝑧 = 𝐵) |
43 | 42 | orbi2i 540 |
. . . . . . . . . 10
⊢ ((𝑧 ∈ (𝐴 ∖ {𝐵}) ∨ 𝑧 ∈ {𝐵}) ↔ (𝑧 ∈ (𝐴 ∖ {𝐵}) ∨ 𝑧 = 𝐵)) |
44 | | pm5.61 745 |
. . . . . . . . . . . 12
⊢ (((𝑧 ∈ (𝐴 ∖ {𝐵}) ∨ 𝑧 = 𝐵) ∧ ¬ 𝑧 = 𝐵) ↔ (𝑧 ∈ (𝐴 ∖ {𝐵}) ∧ ¬ 𝑧 = 𝐵)) |
45 | | fvres 6117 |
. . . . . . . . . . . . 13
⊢ (𝑧 ∈ (𝐴 ∖ {𝐵}) → ((𝐹 ↾ (𝐴 ∖ {𝐵}))‘𝑧) = (𝐹‘𝑧)) |
46 | 45 | adantr 480 |
. . . . . . . . . . . 12
⊢ ((𝑧 ∈ (𝐴 ∖ {𝐵}) ∧ ¬ 𝑧 = 𝐵) → ((𝐹 ↾ (𝐴 ∖ {𝐵}))‘𝑧) = (𝐹‘𝑧)) |
47 | 44, 46 | sylbi 206 |
. . . . . . . . . . 11
⊢ (((𝑧 ∈ (𝐴 ∖ {𝐵}) ∨ 𝑧 = 𝐵) ∧ ¬ 𝑧 = 𝐵) → ((𝐹 ↾ (𝐴 ∖ {𝐵}))‘𝑧) = (𝐹‘𝑧)) |
48 | 47 | ifeq2da 4067 |
. . . . . . . . . 10
⊢ ((𝑧 ∈ (𝐴 ∖ {𝐵}) ∨ 𝑧 = 𝐵) → if(𝑧 = 𝐵, 𝑥, ((𝐹 ↾ (𝐴 ∖ {𝐵}))‘𝑧)) = if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧))) |
49 | 43, 48 | sylbi 206 |
. . . . . . . . 9
⊢ ((𝑧 ∈ (𝐴 ∖ {𝐵}) ∨ 𝑧 ∈ {𝐵}) → if(𝑧 = 𝐵, 𝑥, ((𝐹 ↾ (𝐴 ∖ {𝐵}))‘𝑧)) = if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧))) |
50 | 41, 49 | sylbi 206 |
. . . . . . . 8
⊢ (𝑧 ∈ ((𝐴 ∖ {𝐵}) ∪ {𝐵}) → if(𝑧 = 𝐵, 𝑥, ((𝐹 ↾ (𝐴 ∖ {𝐵}))‘𝑧)) = if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧))) |
51 | 50 | mpteq2ia 4668 |
. . . . . . 7
⊢ (𝑧 ∈ ((𝐴 ∖ {𝐵}) ∪ {𝐵}) ↦ if(𝑧 = 𝐵, 𝑥, ((𝐹 ↾ (𝐴 ∖ {𝐵}))‘𝑧))) = (𝑧 ∈ ((𝐴 ∖ {𝐵}) ∪ {𝐵}) ↦ if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧))) |
52 | 40, 51 | eqtr4i 2635 |
. . . . . 6
⊢ (𝑧 ∈ (𝐴 ∪ {𝐵}) ↦ if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧))) = (𝑧 ∈ ((𝐴 ∖ {𝐵}) ∪ {𝐵}) ↦ if(𝑧 = 𝐵, 𝑥, ((𝐹 ↾ (𝐴 ∖ {𝐵}))‘𝑧))) |
53 | 15 | adantr 480 |
. . . . . 6
⊢ ((𝜑 ∧ (𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ)) → (𝐹 ↾ (𝐴 ∖ {𝐵})):(𝐴 ∖ {𝐵})⟶ℂ) |
54 | 34 | ssdifssd 3710 |
. . . . . 6
⊢ ((𝜑 ∧ (𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ)) → (𝐴 ∖ {𝐵}) ⊆ ℂ) |
55 | 38, 31, 52, 53, 54, 35 | ellimc 23443 |
. . . . 5
⊢ ((𝜑 ∧ (𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ)) → (𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵) ↔ (𝑧 ∈ (𝐴 ∪ {𝐵}) ↦ if(𝑧 = 𝐵, 𝑥, (𝐹‘𝑧))) ∈
((((TopOpen‘ℂfld) ↾t (𝐴 ∪ {𝐵})) CnP
(TopOpen‘ℂfld))‘𝐵))) |
56 | 36, 55 | bitr4d 270 |
. . . 4
⊢ ((𝜑 ∧ (𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ)) → (𝑥 ∈ (𝐹 limℂ 𝐵) ↔ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵))) |
57 | 56 | ex 449 |
. . 3
⊢ (𝜑 → ((𝐴 ⊆ ℂ ∧ 𝐵 ∈ ℂ) → (𝑥 ∈ (𝐹 limℂ 𝐵) ↔ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵)))) |
58 | 11, 29, 57 | pm5.21ndd 368 |
. 2
⊢ (𝜑 → (𝑥 ∈ (𝐹 limℂ 𝐵) ↔ 𝑥 ∈ ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵))) |
59 | 58 | eqrdv 2608 |
1
⊢ (𝜑 → (𝐹 limℂ 𝐵) = ((𝐹 ↾ (𝐴 ∖ {𝐵})) limℂ 𝐵)) |