Proof of Theorem islp2
| Step | Hyp | Ref
| Expression |
| 1 | | lpfval.1 |
. . . . 5
⊢ X =
∪J |
| 2 | 1 | islp 7694 |
. . . 4
⊢ ((J
∈ Top ⋀ S ⊆ X) → (P
∈ ((limPt ‘J) ‘S) ↔ P
∈ ((cls ‘J) ‘(S ∖ {P})))) |
| 3 | 1 | clsval 7627 |
. . . . . 6
⊢ ((J
∈ Top ⋀ (S ∖ {P}) ⊆ X)
→ ((cls ‘J) ‘(S ∖ {P}))
= ∩{x ∈
(Clsd ‘J)∣(S ∖ {P})
⊆ x}) |
| 4 | | ssdifss 2164 |
. . . . . 6
⊢ (S
⊆ X → (S ∖ {P})
⊆ X) |
| 5 | 3, 4 | sylan2 451 |
. . . . 5
⊢ ((J
∈ Top ⋀ S ⊆ X) → ((cls ‘J) ‘(S
∖ {P})) = ∩{x ∈ (Clsd
‘J)∣(S ∖ {P})
⊆ x}) |
| 6 | 5 | eleq2d 1538 |
. . . 4
⊢ ((J
∈ Top ⋀ S ⊆ X) → (P
∈ ((cls ‘J) ‘(S ∖ {P}))
↔ P ∈ ∩{x ∈ (Clsd
‘J)∣(S ∖ {P})
⊆ x})) |
| 7 | 2, 6 | bitrd 527 |
. . 3
⊢ ((J
∈ Top ⋀ S ⊆ X) → (P
∈ ((limPt ‘J) ‘S) ↔ P
∈ ∩{x
∈ (Clsd ‘J)∣(S ∖ {P})
⊆ x})) |
| 8 | 7 | 3adant3 798 |
. 2
⊢ ((J
∈ Top ⋀ S ⊆ X ⋀ P
∈ X) → (P ∈ ((limPt ‘J) ‘S)
↔ P ∈ ∩{x ∈ (Clsd
‘J)∣(S ∖ {P})
⊆ x})) |
| 9 | | elintrabg 2541 |
. . . 4
⊢ (P
∈ X → (P ∈ ∩{x ∈ (Clsd ‘J)∣(S
∖ {P}) ⊆ x} ↔ ∀x ∈ (Clsd ‘J)((S ∖
{P}) ⊆ x → P
∈ x))) |
| 10 | 1 | iscld 7619 |
. . . . . . 7
⊢ (J
∈ Top → (x ∈ (Clsd
‘J) ↔ (x ⊆ X
⋀ (X ∖ x) ∈ J))) |
| 11 | 10 | imbi1d 612 |
. . . . . 6
⊢ (J
∈ Top → ((x ∈ (Clsd
‘J) → ((S ∖ {P})
⊆ x → P ∈ x))
↔ ((x ⊆ X ⋀ (X
∖ x) ∈ J) → ((S
∖ {P}) ⊆ x → P
∈ x)))) |
| 12 | 11 | albidv 1276 |
. . . . 5
⊢ (J
∈ Top → (∀x(x ∈ (Clsd ‘J) → ((S
∖ {P}) ⊆ x → P
∈ x)) ↔ ∀x((x ⊆
X ⋀ (X ∖ x)
∈ J) → ((S ∖ {P})
⊆ x → P ∈ x)))) |
| 13 | | df-ral 1646 |
. . . . 5
⊢ (∀x ∈ (Clsd ‘J)((S ∖
{P}) ⊆ x → P
∈ x) ↔ ∀x(x ∈ (Clsd
‘J) → ((S ∖ {P})
⊆ x → P ∈ x))) |
| 14 | 12, 13 | syl5bb 531 |
. . . 4
⊢ (J
∈ Top → (∀x ∈ (Clsd
‘J)((S ∖ {P})
⊆ x → P ∈ x)
↔ ∀x((x ⊆ X
⋀ (X ∖ x) ∈ J)
→ ((S ∖ {P}) ⊆ x
→ P ∈ x)))) |
| 15 | 9, 14 | sylan9bbr 540 |
. . 3
⊢ ((J
∈ Top ⋀ P ∈ X) → (P
∈ ∩{x
∈ (Clsd ‘J)∣(S ∖ {P})
⊆ x} ↔ ∀x((x ⊆
X ⋀ (X ∖ x)
∈ J) → ((S ∖ {P})
⊆ x → P ∈ x)))) |
| 16 | 15 | 3adant2 797 |
. 2
⊢ ((J
∈ Top ⋀ S ⊆ X ⋀ P
∈ X) → (P ∈ ∩{x ∈ (Clsd ‘J)∣(S
∖ {P}) ⊆ x} ↔ ∀x((x ⊆
X ⋀ (X ∖ x)
∈ J) → ((S ∖ {P})
⊆ x → P ∈ x)))) |
| 17 | 1 | isneip 7670 |
. . . . . . . 8
⊢ ((J
∈ Top ⋀ P ∈ X) → (n
∈ ((nei ‘J) ‘{P}) ↔ (n
⊆ X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n)))) |
| 18 | 17 | imbi1d 612 |
. . . . . . 7
⊢ ((J
∈ Top ⋀ P ∈ X) → ((n
∈ ((nei ‘J) ‘{P}) → (n
∩ (S ∖ {P})) ≠ ∅) ↔ ((n ⊆ X
⋀ ∃y ∈ J (P ∈
y ⋀ y ⊆ n))
→ (n ∩ (S ∖ {P}))
≠ ∅))) |
| 19 | 18 | albidv 1276 |
. . . . . 6
⊢ ((J
∈ Top ⋀ P ∈ X) → (∀n(n ∈ ((nei
‘J) ‘{P}) → (n
∩ (S ∖ {P})) ≠ ∅) ↔ ∀n((n ⊆
X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n)) → (n ∩ (S
∖ {P})) ≠ ∅))) |
| 20 | | df-ral 1646 |
. . . . . 6
⊢ (∀n ∈ ((nei ‘J) ‘{P})(n ∩
(S ∖ {P})) ≠ ∅ ↔ ∀n(n ∈ ((nei
‘J) ‘{P}) → (n
∩ (S ∖ {P})) ≠ ∅)) |
| 21 | 19, 20 | syl5bb 531 |
. . . . 5
⊢ ((J
∈ Top ⋀ P ∈ X) → (∀n ∈ ((nei ‘J) ‘{P})(n ∩
(S ∖ {P})) ≠ ∅ ↔ ∀n((n ⊆
X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n)) → (n ∩ (S
∖ {P})) ≠ ∅))) |
| 22 | 21 | 3adant2 797 |
. . . 4
⊢ ((J
∈ Top ⋀ S ⊆ X ⋀ P
∈ X) → (∀n ∈ ((nei ‘J) ‘{P})(n ∩
(S ∖ {P})) ≠ ∅ ↔ ∀n((n ⊆
X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n)) → (n ∩ (S
∖ {P})) ≠ ∅))) |
| 23 | | elpwi 2402 |
. . . . . . . . . . . 12
⊢ (n
∈ ℘X → n ⊆ X) |
| 24 | | dfss4 2238 |
. . . . . . . . . . . 12
⊢ (n
⊆ X ↔ (X ∖ (X
∖ n)) = n) |
| 25 | 23, 24 | sylib 198 |
. . . . . . . . . . 11
⊢ (n
∈ ℘X → (X ∖ (X
∖ n)) = n) |
| 26 | 25 | eqcomd 1477 |
. . . . . . . . . 10
⊢ (n
∈ ℘X → n = (X ∖
(X ∖ n))) |
| 27 | 26 | eleq1d 1537 |
. . . . . . . . 9
⊢ (n
∈ ℘X → (n ∈ J
↔ (X ∖ (X ∖ n))
∈ J)) |
| 28 | 27 | adantl 388 |
. . . . . . . 8
⊢ (((S
⊆ X ⋀ P ∈ X)
⋀ n ∈ ℘X) → (n
∈ J ↔ (X ∖ (X
∖ n)) ∈ J)) |
| 29 | | reldisj 2309 |
. . . . . . . . . . . . . 14
⊢ ((S
∖ {P}) ⊆ X → (((S
∖ {P}) ∩ n) = ∅ ↔ (S ∖ {P})
⊆ (X ∖ n))) |
| 30 | 4, 29 | syl 10 |
. . . . . . . . . . . . 13
⊢ (S
⊆ X → (((S ∖ {P})
∩ n) = ∅ ↔ (S ∖ {P})
⊆ (X ∖ n))) |
| 31 | | incom 2204 |
. . . . . . . . . . . . . 14
⊢ (n
∩ (S ∖ {P})) = ((S
∖ {P}) ∩ n) |
| 32 | 31 | eqeq1i 1479 |
. . . . . . . . . . . . 13
⊢ ((n
∩ (S ∖ {P})) = ∅ ↔ ((S ∖ {P})
∩ n) = ∅) |
| 33 | 30, 32 | syl5bb 531 |
. . . . . . . . . . . 12
⊢ (S
⊆ X → ((n ∩ (S
∖ {P})) = ∅ ↔ (S ∖ {P})
⊆ (X ∖ n))) |
| 34 | 33 | adantr 389 |
. . . . . . . . . . 11
⊢ ((S
⊆ X ⋀ P ∈ X)
→ ((n ∩ (S ∖ {P}))
= ∅ ↔ (S ∖ {P}) ⊆ (X
∖ n))) |
| 35 | | eldif 2053 |
. . . . . . . . . . . . 13
⊢ (P
∈ (X ∖ n) ↔ (P
∈ X ⋀ ¬ P ∈ n)) |
| 36 | 35 | baibr 685 |
. . . . . . . . . . . 12
⊢ (P
∈ X → (¬ P ∈ n
↔ P ∈ (X ∖ n))) |
| 37 | 36 | adantl 388 |
. . . . . . . . . . 11
⊢ ((S
⊆ X ⋀ P ∈ X)
→ (¬ P ∈ n ↔ P
∈ (X ∖ n))) |
| 38 | 34, 37 | imbi12d 625 |
. . . . . . . . . 10
⊢ ((S
⊆ X ⋀ P ∈ X)
→ (((n ∩ (S ∖ {P}))
= ∅ → ¬ P ∈ n) ↔ ((S
∖ {P}) ⊆ (X ∖ n)
→ P ∈ (X ∖ n)))) |
| 39 | | df-ne 1584 |
. . . . . . . . . . . 12
⊢ ((n
∩ (S ∖ {P})) ≠ ∅ ↔ ¬ (n ∩ (S
∖ {P})) = ∅) |
| 40 | 39 | imbi2i 185 |
. . . . . . . . . . 11
⊢ ((P
∈ n → (n ∩ (S
∖ {P})) ≠ ∅) ↔
(P ∈ n → ¬ (n ∩ (S
∖ {P})) = ∅)) |
| 41 | | bi2.03 165 |
. . . . . . . . . . 11
⊢ ((P
∈ n → ¬ (n ∩ (S
∖ {P})) = ∅) ↔ ((n ∩ (S
∖ {P})) = ∅ → ¬
P ∈ n)) |
| 42 | 40, 41 | bitr 173 |
. . . . . . . . . 10
⊢ ((P
∈ n → (n ∩ (S
∖ {P})) ≠ ∅) ↔
((n ∩ (S ∖ {P}))
= ∅ → ¬ P ∈ n)) |
| 43 | 38, 42 | syl5bb 531 |
. . . . . . . . 9
⊢ ((S
⊆ X ⋀ P ∈ X)
→ ((P ∈ n → (n
∩ (S ∖ {P})) ≠ ∅) ↔ ((S ∖ {P})
⊆ (X ∖ n) → P
∈ (X ∖ n)))) |
| 44 | 43 | adantr 389 |
. . . . . . . 8
⊢ (((S
⊆ X ⋀ P ∈ X)
⋀ n ∈ ℘X) → ((P
∈ n → (n ∩ (S
∖ {P})) ≠ ∅) ↔
((S ∖ {P}) ⊆ (X
∖ n) → P ∈ (X
∖ n)))) |
| 45 | 28, 44 | imbi12d 625 |
. . . . . . 7
⊢ (((S
⊆ X ⋀ P ∈ X)
⋀ n ∈ ℘X) → ((n
∈ J → (P ∈ n
→ (n ∩ (S ∖ {P}))
≠ ∅)) ↔ ((X ∖ (X ∖ n))
∈ J → ((S ∖ {P})
⊆ (X ∖ n) → P
∈ (X ∖ n))))) |
| 46 | 45 | ralbidva 1656 |
. . . . . 6
⊢ ((S
⊆ X ⋀ P ∈ X)
→ (∀n ∈ ℘ X(n ∈
J → (P ∈ n
→ (n ∩ (S ∖ {P}))
≠ ∅)) ↔ ∀n ∈
℘ X((X ∖ (X
∖ n)) ∈ J → ((S
∖ {P}) ⊆ (X ∖ n)
→ P ∈ (X ∖ n))))) |
| 47 | 46 | 3adant1 796 |
. . . . 5
⊢ ((J
∈ Top ⋀ S ⊆ X ⋀ P
∈ X) → (∀n ∈ ℘ X(n ∈
J → (P ∈ n
→ (n ∩ (S ∖ {P}))
≠ ∅)) ↔ ∀n ∈
℘ X((X ∖ (X
∖ n)) ∈ J → ((S
∖ {P}) ⊆ (X ∖ n)
→ P ∈ (X ∖ n))))) |
| 48 | | eleq2 1532 |
. . . . . . . . . . . . . 14
⊢ (y =
n → (P ∈ y
↔ P ∈ n)) |
| 49 | | sseq1 2078 |
. . . . . . . . . . . . . 14
⊢ (y =
n → (y ⊆ n
↔ n ⊆ n)) |
| 50 | 48, 49 | anbi12d 627 |
. . . . . . . . . . . . 13
⊢ (y =
n → ((P ∈ y
⋀ y ⊆ n) ↔ (P
∈ n ⋀ n ⊆ n))) |
| 51 | | ssid 2076 |
. . . . . . . . . . . . . 14
⊢ n
⊆ n |
| 52 | 51 | biantru 723 |
. . . . . . . . . . . . 13
⊢ (P
∈ n ↔ (P ∈ n
⋀ n ⊆ n)) |
| 53 | 50, 52 | syl6bbr 537 |
. . . . . . . . . . . 12
⊢ (y =
n → ((P ∈ y
⋀ y ⊆ n) ↔ P
∈ n)) |
| 54 | 53 | rcla4ev 1873 |
. . . . . . . . . . 11
⊢ ((n
∈ J ⋀ P ∈ n)
→ ∃y ∈ J (P ∈
y ⋀ y ⊆ n)) |
| 55 | 54 | anim2i 335 |
. . . . . . . . . 10
⊢ ((n
⊆ X ⋀ (n ∈ J
⋀ P ∈ n)) → (n
⊆ X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n))) |
| 56 | 55 | anassrs 441 |
. . . . . . . . 9
⊢ (((n
⊆ X ⋀ n ∈ J)
⋀ P ∈ n) → (n
⊆ X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n))) |
| 57 | 56 | imim1i 16 |
. . . . . . . 8
⊢ (((n
⊆ X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n)) → (n ∩ (S
∖ {P})) ≠ ∅) →
(((n ⊆ X ⋀ n
∈ J) ⋀ P ∈ n)
→ (n ∩ (S ∖ {P}))
≠ ∅)) |
| 58 | 57 | 19.20i 990 |
. . . . . . 7
⊢ (∀n((n ⊆
X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n)) → (n ∩ (S
∖ {P})) ≠ ∅) →
∀n(((n ⊆ X
⋀ n ∈ J) ⋀ P
∈ n) → (n ∩ (S
∖ {P})) ≠ ∅)) |
| 59 | | ax-17 969 |
. . . . . . . . 9
⊢ ((J
∈ Top ⋀ P ∈ X) → ∀n(J ∈ Top
⋀ P ∈ X)) |
| 60 | | hba1 1001 |
. . . . . . . . 9
⊢ (∀n(((n ⊆
X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅) → ∀n∀n(((n ⊆
X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅)) |
| 61 | 1 | eltopss 7553 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ ((J
∈ Top ⋀ y ∈ J) → y
⊆ X) |
| 62 | 61 | ancoms 436 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((y
∈ J ⋀ J ∈ Top) → y ⊆ X) |
| 63 | | pm3.26 319 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ ((y
∈ J ⋀ J ∈ Top) → y ∈ J) |
| 64 | 62, 63 | jca 288 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((y
∈ J ⋀ J ∈ Top) → (y ⊆ X
⋀ y ∈ J)) |
| 65 | 64 | anim1i 334 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (((y
∈ J ⋀ J ∈ Top) ⋀ P ∈ y)
→ ((y ⊆ X ⋀ y
∈ J) ⋀ P ∈ y)) |
| 66 | 65 | adantrr 395 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (((y
∈ J ⋀ J ∈ Top) ⋀ (P ∈ y
⋀ P ∈ X)) → ((y
⊆ X ⋀ y ∈ J)
⋀ P ∈ y)) |
| 67 | 66 | an4s 508 |
. . . . . . . . . . . . . . . . . . 19
⊢ (((y
∈ J ⋀ P ∈ y)
⋀ (J ∈ Top ⋀ P ∈ X))
→ ((y ⊆ X ⋀ y
∈ J) ⋀ P ∈ y)) |
| 68 | 67 | adantlrr 399 |
. . . . . . . . . . . . . . . . . 18
⊢ (((y
∈ J ⋀ (P ∈ y
⋀ y ⊆ n)) ⋀ (J
∈ Top ⋀ P ∈ X)) → ((y
⊆ X ⋀ y ∈ J)
⋀ P ∈ y)) |
| 69 | | ssrin 2230 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (y
⊆ n → (y ∩ (S
∖ {P})) ⊆ (n ∩ (S
∖ {P}))) |
| 70 | | ssne0 2301 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (((y
∩ (S ∖ {P})) ⊆ (n
∩ (S ∖ {P})) ⋀ (y
∩ (S ∖ {P})) ≠ ∅) → (n ∩ (S
∖ {P})) ≠ ∅) |
| 71 | 70 | ex 373 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ((y
∩ (S ∖ {P})) ⊆ (n
∩ (S ∖ {P})) → ((y
∩ (S ∖ {P})) ≠ ∅ → (n ∩ (S
∖ {P})) ≠ ∅)) |
| 72 | 69, 71 | syl 10 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (y
⊆ n → ((y ∩ (S
∖ {P})) ≠ ∅ → (n ∩ (S
∖ {P})) ≠ ∅)) |
| 73 | 72 | adantl 388 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((P
∈ y ⋀ y ⊆ n)
→ ((y ∩ (S ∖ {P}))
≠ ∅ → (n ∩ (S ∖ {P}))
≠ ∅)) |
| 74 | 73 | ad2antlr 405 |
. . . . . . . . . . . . . . . . . . 19
⊢ (((y
∈ J ⋀ (P ∈ y
⋀ y ⊆ n)) ⋀ (J
∈ Top ⋀ P ∈ X)) → ((y
∩ (S ∖ {P})) ≠ ∅ → (n ∩ (S
∖ {P})) ≠ ∅)) |
| 75 | 74 | imim2d 25 |
. . . . . . . . . . . . . . . . . 18
⊢ (((y
∈ J ⋀ (P ∈ y
⋀ y ⊆ n)) ⋀ (J
∈ Top ⋀ P ∈ X)) → ((((y
⊆ X ⋀ y ∈ J)
⋀ P ∈ y) → (y
∩ (S ∖ {P})) ≠ ∅) → (((y ⊆ X
⋀ y ∈ J) ⋀ P
∈ y) → (n ∩ (S
∖ {P})) ≠ ∅))) |
| 76 | 68, 75 | mpid 47 |
. . . . . . . . . . . . . . . . 17
⊢ (((y
∈ J ⋀ (P ∈ y
⋀ y ⊆ n)) ⋀ (J
∈ Top ⋀ P ∈ X)) → ((((y
⊆ X ⋀ y ∈ J)
⋀ P ∈ y) → (y
∩ (S ∖ {P})) ≠ ∅) → (n ∩ (S
∖ {P})) ≠ ∅)) |
| 77 | 76 | exp31 376 |
. . . . . . . . . . . . . . . 16
⊢ (y
∈ J → ((P ∈ y
⋀ y ⊆ n) → ((J
∈ Top ⋀ P ∈ X) → ((((y
⊆ X ⋀ y ∈ J)
⋀ P ∈ y) → (y
∩ (S ∖ {P})) ≠ ∅) → (n ∩ (S
∖ {P})) ≠ ∅)))) |
| 78 | 77 | com4t 40 |
. . . . . . . . . . . . . . 15
⊢ ((J
∈ Top ⋀ P ∈ X) → ((((y
⊆ X ⋀ y ∈ J)
⋀ P ∈ y) → (y
∩ (S ∖ {P})) ≠ ∅) → (y ∈ J
→ ((P ∈ y ⋀ y
⊆ n) → (n ∩ (S
∖ {P})) ≠ ∅)))) |
| 79 | 78 | imp 350 |
. . . . . . . . . . . . . 14
⊢ (((J
∈ Top ⋀ P ∈ X) ⋀ (((y
⊆ X ⋀ y ∈ J)
⋀ P ∈ y) → (y
∩ (S ∖ {P})) ≠ ∅)) → (y ∈ J
→ ((P ∈ y ⋀ y
⊆ n) → (n ∩ (S
∖ {P})) ≠ ∅))) |
| 80 | | sseq1 2078 |
. . . . . . . . . . . . . . . . . 18
⊢ (n =
y → (n ⊆ X
↔ y ⊆ X)) |
| 81 | | eleq1 1531 |
. . . . . . . . . . . . . . . . . 18
⊢ (n =
y → (n ∈ J
↔ y ∈ J)) |
| 82 | 80, 81 | anbi12d 627 |
. . . . . . . . . . . . . . . . 17
⊢ (n =
y → ((n ⊆ X
⋀ n ∈ J) ↔ (y
⊆ X ⋀ y ∈ J))) |
| 83 | | eleq2 1532 |
. . . . . . . . . . . . . . . . 17
⊢ (n =
y → (P ∈ n
↔ P ∈ y)) |
| 84 | 82, 83 | anbi12d 627 |
. . . . . . . . . . . . . . . 16
⊢ (n =
y → (((n ⊆ X
⋀ n ∈ J) ⋀ P
∈ n) ↔ ((y ⊆ X
⋀ y ∈ J) ⋀ P
∈ y))) |
| 85 | | ineq1 2206 |
. . . . . . . . . . . . . . . . 17
⊢ (n =
y → (n ∩ (S
∖ {P})) = (y ∩ (S
∖ {P}))) |
| 86 | 85 | neeq1d 1591 |
. . . . . . . . . . . . . . . 16
⊢ (n =
y → ((n ∩ (S
∖ {P})) ≠ ∅ ↔ (y ∩ (S
∖ {P})) ≠ ∅)) |
| 87 | 84, 86 | imbi12d 625 |
. . . . . . . . . . . . . . 15
⊢ (n =
y → ((((n ⊆ X
⋀ n ∈ J) ⋀ P
∈ n) → (n ∩ (S
∖ {P})) ≠ ∅) ↔
(((y ⊆ X ⋀ y
∈ J) ⋀ P ∈ y)
→ (y ∩ (S ∖ {P}))
≠ ∅))) |
| 88 | 87 | a4v 1270 |
. . . . . . . . . . . . . 14
⊢ (∀n(((n ⊆
X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅) → (((y ⊆ X
⋀ y ∈ J) ⋀ P
∈ y) → (y ∩ (S
∖ {P})) ≠ ∅)) |
| 89 | 79, 88 | sylan2 451 |
. . . . . . . . . . . . 13
⊢ (((J
∈ Top ⋀ P ∈ X) ⋀ ∀n(((n ⊆
X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅)) → (y ∈ J
→ ((P ∈ y ⋀ y
⊆ n) → (n ∩ (S
∖ {P})) ≠ ∅))) |
| 90 | 89 | r19.23adv 1743 |
. . . . . . . . . . . 12
⊢ (((J
∈ Top ⋀ P ∈ X) ⋀ ∀n(((n ⊆
X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅)) → (∃y ∈ J
(P ∈ y ⋀ y
⊆ n) → (n ∩ (S
∖ {P})) ≠ ∅)) |
| 91 | 90 | ex 373 |
. . . . . . . . . . 11
⊢ ((J
∈ Top ⋀ P ∈ X) → (∀n(((n ⊆
X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅) → (∃y ∈ J
(P ∈ y ⋀ y
⊆ n) → (n ∩ (S
∖ {P})) ≠ ∅))) |
| 92 | 91 | a1dd 42 |
. . . . . . . . . 10
⊢ ((J
∈ Top ⋀ P ∈ X) → (∀n(((n ⊆
X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅) → (n ⊆ X
→ (∃y ∈ J (P ∈
y ⋀ y ⊆ n)
→ (n ∩ (S ∖ {P}))
≠ ∅)))) |
| 93 | 92 | imp4a 364 |
. . . . . . . . 9
⊢ ((J
∈ Top ⋀ P ∈ X) → (∀n(((n ⊆
X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅) → ((n ⊆ X
⋀ ∃y ∈ J (P ∈
y ⋀ y ⊆ n))
→ (n ∩ (S ∖ {P}))
≠ ∅))) |
| 94 | 59, 60, 93 | 19.21ad 1057 |
. . . . . . . 8
⊢ ((J
∈ Top ⋀ P ∈ X) → (∀n(((n ⊆
X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅) → ∀n((n ⊆
X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n)) → (n ∩ (S
∖ {P})) ≠ ∅))) |
| 95 | 94 | 3adant2 797 |
. . . . . . 7
⊢ ((J
∈ Top ⋀ S ⊆ X ⋀ P
∈ X) → (∀n(((n ⊆
X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅) → ∀n((n ⊆
X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n)) → (n ∩ (S
∖ {P})) ≠ ∅))) |
| 96 | 58, 95 | impbid2 517 |
. . . . . 6
⊢ ((J
∈ Top ⋀ S ⊆ X ⋀ P
∈ X) → (∀n((n ⊆
X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n)) → (n ∩ (S
∖ {P})) ≠ ∅) ↔
∀n(((n ⊆ X
⋀ n ∈ J) ⋀ P
∈ n) → (n ∩ (S
∖ {P})) ≠ ∅))) |
| 97 | | df-ral 1646 |
. . . . . . 7
⊢ (∀n ∈ ℘ X(n ∈
J → (P ∈ n
→ (n ∩ (S ∖ {P}))
≠ ∅)) ↔ ∀n(n ∈ ℘X → (n
∈ J → (P ∈ n
→ (n ∩ (S ∖ {P}))
≠ ∅)))) |
| 98 | | impexp 347 |
. . . . . . . . 9
⊢ (((n
⊆ X ⋀ n ∈ J)
→ (P ∈ n → (n
∩ (S ∖ {P})) ≠ ∅)) ↔ (n ⊆ X
→ (n ∈ J → (P
∈ n → (n ∩ (S
∖ {P})) ≠ ∅)))) |
| 99 | | impexp 347 |
. . . . . . . . 9
⊢ ((((n
⊆ X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅) ↔ ((n ⊆ X
⋀ n ∈ J) → (P
∈ n → (n ∩ (S
∖ {P})) ≠ ∅))) |
| 100 | | visset 1809 |
. . . . . . . . . . 11
⊢ n
∈ V |
| 101 | 100 | elpw 2400 |
. . . . . . . . . 10
⊢ (n
∈ ℘X ↔ n ⊆ X) |
| 102 | 101 | imbi1i 186 |
. . . . . . . . 9
⊢ ((n
∈ ℘X → (n ∈ J
→ (P ∈ n → (n
∩ (S ∖ {P})) ≠ ∅))) ↔ (n ⊆ X
→ (n ∈ J → (P
∈ n → (n ∩ (S
∖ {P})) ≠ ∅)))) |
| 103 | 98, 99, 102 | 3bitr4r 184 |
. . . . . . . 8
⊢ ((n
∈ ℘X → (n ∈ J
→ (P ∈ n → (n
∩ (S ∖ {P})) ≠ ∅))) ↔ (((n ⊆ X
⋀ n ∈ J) ⋀ P
∈ n) → (n ∩ (S
∖ {P})) ≠ ∅)) |
| 104 | 103 | albii 997 |
. . . . . . 7
⊢ (∀n(n ∈
℘X → (n ∈ J
→ (P ∈ n → (n
∩ (S ∖ {P})) ≠ ∅))) ↔ ∀n(((n ⊆
X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅)) |
| 105 | 97, 104 | bitr2 174 |
. . . . . 6
⊢ (∀n(((n ⊆
X ⋀ n ∈ J)
⋀ P ∈ n) → (n
∩ (S ∖ {P})) ≠ ∅) ↔ ∀n ∈ ℘ X(n ∈
J → (P ∈ n
→ (n ∩ (S ∖ {P}))
≠ ∅))) |
| 106 | 96, 105 | syl6bb 535 |
. . . . 5
⊢ ((J
∈ Top ⋀ S ⊆ X ⋀ P
∈ X) → (∀n((n ⊆
X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n)) → (n ∩ (S
∖ {P})) ≠ ∅) ↔
∀n ∈ ℘ X(n ∈
J → (P ∈ n
→ (n ∩ (S ∖ {P}))
≠ ∅)))) |
| 107 | | uniexg 2866 |
. . . . . . . 8
⊢ (J
∈ Top → ∪J ∈ V) |
| 108 | 107, 1 | syl5eqel 1549 |
. . . . . . 7
⊢ (J
∈ Top → X ∈
V) |
| 109 | 108 | 3ad2ant1 799 |
. . . . . 6
⊢ ((J
∈ Top ⋀ S ⊆ X ⋀ P
∈ X) → X ∈ V) |
| 110 | | difss 2163 |
. . . . . . . . 9
⊢ (X
∖ n) ⊆ X |
| 111 | | elpw2g 2722 |
. . . . . . . . 9
⊢ (X
∈ V → ((X ∖ n) ∈ ℘X ↔ (X
∖ n) ⊆ X)) |
| 112 | 110, 111 | mpbiri 194 |
. . . . . . . 8
⊢ (X
∈ V → (X ∖ n) ∈ ℘X) |
| 113 | 112 | adantr 389 |
. . . . . . 7
⊢ ((X
∈ V ⋀ n ∈
℘X) → (X ∖ n)
∈ ℘X) |
| 114 | | difeq2 2150 |
. . . . . . . . . 10
⊢ (n =
(X ∖ x) → (X
∖ n) = (X ∖ (X
∖ x))) |
| 115 | 114 | eqeq2d 1483 |
. . . . . . . . 9
⊢ (n =
(X ∖ x) → (x =
(X ∖ n) ↔ x =
(X ∖ (X ∖ x)))) |
| 116 | 115 | rcla4ev 1873 |
. . . . . . . 8
⊢ (((X
∖ x) ∈ ℘X ⋀ x =
(X ∖ (X ∖ x)))
→ ∃n ∈ ℘ Xx = (X ∖ n)) |
| 117 | | difss 2163 |
. . . . . . . . 9
⊢ (X
∖ x) ⊆ X |
| 118 | | elpw2g 2722 |
. . . . . . . . 9
⊢ (X
∈ V → ((X ∖ x) ∈ ℘X ↔ (X
∖ x) ⊆ X)) |
| 119 | 117, 118 | mpbiri 194 |
. . . . . . . 8
⊢ (X
∈ V → (X ∖ x) ∈ ℘X) |
| 120 | | elpwi 2402 |
. . . . . . . . . 10
⊢ (x
∈ ℘X → x ⊆ X) |
| 121 | | dfss4 2238 |
. . . . . . . . . 10
⊢ (x
⊆ X ↔ (X ∖ (X
∖ x)) = x) |
| 122 | 120, 121 | sylib 198 |
. . . . . . . . 9
⊢ (x
∈ ℘X → (X ∖ (X
∖ x)) = x) |
| 123 | 122 | eqcomd 1477 |
. . . . . . . 8
⊢ (x
∈ ℘X → x = (X ∖
(X ∖ x))) |
| 124 | 116, 119, 123 | syl2an 454 |
. . . . . . 7
⊢ ((X
∈ V ⋀ x ∈
℘X) → ∃n ∈ ℘ Xx = (X ∖ n)) |
| 125 | | difeq2 2150 |
. . . . . . . . . 10
⊢ (x =
(X ∖ n) → (X
∖ x) = (X ∖ (X
∖ n))) |
| 126 | 125 | eleq1d 1537 |
. . . . . . . . 9
⊢ (x =
(X ∖ n) → ((X
∖ x) ∈ J ↔ (X
∖ (X ∖ n)) ∈ J)) |
| 127 | | sseq2 2079 |
. . . . . . . . . 10
⊢ (x =
(X ∖ n) → ((S
∖ {P}) ⊆ x ↔ (S
∖ {P}) ⊆ (X ∖ n))) |
| 128 | | eleq2 1532 |
. . . . . . . . . 10
⊢ (x =
(X ∖ n) → (P
∈ x ↔ P ∈ (X
∖ n))) |
| 129 | 127, 128 | imbi12d 625 |
. . . . . . . . 9
⊢ (x =
(X ∖ n) → (((S
∖ {P}) ⊆ x → P
∈ x) ↔ ((S ∖ {P})
⊆ (X ∖ n) → P
∈ (X ∖ n)))) |
| 130 | 126, 129 | imbi12d 625 |
. . . . . . . 8
⊢ (x =
(X ∖ n) → (((X
∖ x) ∈ J → ((S
∖ {P}) ⊆ x → P
∈ x)) ↔ ((X ∖ (X
∖ n)) ∈ J → ((S
∖ {P}) ⊆ (X ∖ n)
→ P ∈ (X ∖ n))))) |
| 131 | 130 | adantl 388 |
. . . . . . 7
⊢ ((X
∈ V ⋀ x = (X ∖ n))
→ (((X ∖ x) ∈ J
→ ((S ∖ {P}) ⊆ x
→ P ∈ x)) ↔ ((X
∖ (X ∖ n)) ∈ J
→ ((S ∖ {P}) ⊆ (X
∖ n) → P ∈ (X
∖ n))))) |
| 132 | 113, 124, 131 | ralxfrd 2892 |
. . . . . 6
⊢ (X
∈ V → (∀x ∈
℘ X((X ∖ x)
∈ J → ((S ∖ {P})
⊆ x → P ∈ x))
↔ ∀n ∈ ℘ X((X ∖
(X ∖ n)) ∈ J
→ ((S ∖ {P}) ⊆ (X
∖ n) → P ∈ (X
∖ n))))) |
| 133 | 109, 132 | syl 10 |
. . . . 5
⊢ ((J
∈ Top ⋀ S ⊆ X ⋀ P
∈ X) → (∀x ∈ ℘ X((X ∖
x) ∈ J → ((S
∖ {P}) ⊆ x → P
∈ x)) ↔ ∀n ∈ ℘ X((X ∖
(X ∖ n)) ∈ J
→ ((S ∖ {P}) ⊆ (X
∖ n) → P ∈ (X
∖ n))))) |
| 134 | 47, 106, 133 | 3bitr4d 549 |
. . . 4
⊢ ((J
∈ Top ⋀ S ⊆ X ⋀ P
∈ X) → (∀n((n ⊆
X ⋀ ∃y ∈ J
(P ∈ y ⋀ y
⊆ n)) → (n ∩ (S
∖ {P})) ≠ ∅) ↔
∀x ∈ ℘ X((X ∖
x) ∈ J → ((S
∖ {P}) ⊆ x → P
∈ x)))) |
| 135 | 22, 134 | bitrd 527 |
. . 3
⊢ ((J
∈ Top ⋀ S ⊆ X ⋀ P
∈ X) → (∀n ∈ ((nei ‘J) ‘{P})(n ∩
(S ∖ {P})) ≠ ∅ ↔ ∀x ∈ ℘ X((X ∖
x) ∈ J → ((S
∖ {P}) ⊆ x → P
∈ x)))) |
| 136 | | df-ral 1646 |
. . . 4
⊢ (∀x ∈ ℘ X((X ∖
x) ∈ J → ((S
∖ {P}) ⊆ x → P
∈ x)) ↔ ∀x(x ∈
℘X → ((X ∖ x)
∈ J → ((S ∖ {P})
⊆ x → P ∈ x)))) |
| 137 | | visset 1809 |
. . . . . . . 8
⊢ x
∈ V |
| 138 | 137 | elpw 2400 |
. . . . . . 7
⊢ (x
∈ ℘X ↔ x ⊆ X) |
| 139 | 138 | imbi1i 186 |
. . . . . 6
⊢ ((x
∈ ℘X → ((X ∖ x)
∈ J → ((S ∖ {P})
⊆ x → P ∈ x)))
↔ (x ⊆ X → ((X
∖ x) ∈ J → ((S
∖ {P}) ⊆ x → P
∈ x)))) |
| 140 | | impexp 347 |
. . . . . 6
⊢ (((x
⊆ X ⋀ (X ∖ |