Proof of Theorem cvexchlem
| Step | Hyp | Ref
| Expression |
| 1 | | chpssat.1 |
. . . . 5
⊢ A
∈ Cℋ |
| 2 | | chpssat.2 |
. . . . 5
⊢ B
∈ Cℋ |
| 3 | 1, 2 | chincl 5382 |
. . . 4
⊢ (A
∩ B) ∈
Cℋ |
| 4 | | cvpsst 5717 |
. . . 4
⊢ (((A
∩ B) ∈ Cℋ
∧ B ∈ Cℋ )
→ ((A ∩ B) ⋖ B
→ (A ∩ B) ⊂ B)) |
| 5 | 3, 2, 4 | mp2an 520 |
. . 3
⊢ ((A
∩ B) ⋖ B → (A
∩ B) ⊂ B) |
| 6 | 3, 2 | chpssat 5756 |
. . 3
⊢ ((A
∩ B) ⊂ B → ∃x ∈ Atoms (x ⊆ B
∧ ¬ x ⊆ (A ∩ B))) |
| 7 | 5, 6 | syl 12 |
. 2
⊢ ((A
∩ B) ⋖ B → ∃x ∈ Atoms (x ⊆ B
∧ ¬ x ⊆ (A ∩ B))) |
| 8 | | chcv1t 5751 |
. . . . . . . . 9
⊢ ((A
∈ Cℋ ∧ x
∈ Atoms) → (¬ x ⊆
A ↔ A ⋖ (A
∨ℋ x))) |
| 9 | 1, 8 | mpan 518 |
. . . . . . . 8
⊢ (x
∈ Atoms → (¬ x ⊆
A ↔ A ⋖ (A
∨ℋ x))) |
| 10 | 9 | biimpa 324 |
. . . . . . 7
⊢ ((x
∈ Atoms ∧ ¬ x ⊆ A) → A
⋖ (A ∨ℋ x)) |
| 11 | | ssin 1659 |
. . . . . . . . . . 11
⊢ ((x
⊆ A ∧ x ⊆ B)
↔ x ⊆ (A ∩ B)) |
| 12 | | ancom 333 |
. . . . . . . . . . 11
⊢ ((x
⊆ A ∧ x ⊆ B)
↔ (x ⊆ B ∧ x
⊆ A)) |
| 13 | 11, 12 | bitr3 153 |
. . . . . . . . . 10
⊢ (x
⊆ (A ∩ B) ↔ (x
⊆ B ∧ x ⊆ A)) |
| 14 | 13 | baibr 507 |
. . . . . . . . 9
⊢ (x
⊆ B → (x ⊆ A
↔ x ⊆ (A ∩ B))) |
| 15 | 14 | negbid 463 |
. . . . . . . 8
⊢ (x
⊆ B → (¬ x ⊆ A
↔ ¬ x ⊆ (A ∩ B))) |
| 16 | 15 | biimpar 325 |
. . . . . . 7
⊢ ((x
⊆ B ∧ ¬ x ⊆ (A
∩ B)) → ¬ x ⊆ A) |
| 17 | 10, 16 | sylan2 346 |
. . . . . 6
⊢ ((x
∈ Atoms ∧ (x ⊆ B ∧ ¬ x
⊆ (A ∩ B))) → A
⋖ (A ∨ℋ x)) |
| 18 | 17 | adantrr 312 |
. . . . 5
⊢ ((x
∈ Atoms ∧ ((x ⊆ B ∧ ¬ x
⊆ (A ∩ B)) ∧ (A
∩ B) ⋖ B)) → A
⋖ (A ∨ℋ x)) |
| 19 | | chjasst 5446 |
. . . . . . . . . . 11
⊢ ((A
∈ Cℋ ∧ (A
∩ B) ∈ Cℋ
∧ x ∈ Cℋ )
→ ((A ∨ℋ (A ∩ B))
∨ℋ x) = (A ∨ℋ ((A ∩ B)
∨ℋ x))) |
| 20 | 1, 19 | mp3an1 639 |
. . . . . . . . . 10
⊢ (((A
∩ B) ∈ Cℋ
∧ x ∈ Cℋ )
→ ((A ∨ℋ (A ∩ B))
∨ℋ x) = (A ∨ℋ ((A ∩ B)
∨ℋ x))) |
| 21 | 3, 20 | mpan 518 |
. . . . . . . . 9
⊢ (x
∈ Cℋ → ((A ∨ℋ (A ∩ B))
∨ℋ x) = (A ∨ℋ ((A ∩ B)
∨ℋ x))) |
| 22 | 1, 2 | chabs1 5434 |
. . . . . . . . . 10
⊢ (A
∨ℋ (A ∩ B)) = A |
| 23 | 22 | opreq1i 3009 |
. . . . . . . . 9
⊢ ((A
∨ℋ (A ∩ B)) ∨ℋ x) = (A
∨ℋ x) |
| 24 | 21, 23 | syl5reqr 1139 |
. . . . . . . 8
⊢ (x
∈ Cℋ → (A
∨ℋ ((A ∩ B) ∨ℋ x)) = (A
∨ℋ x)) |
| 25 | 24 | adantr 306 |
. . . . . . 7
⊢ ((x
∈ Cℋ ∧ ((x
⊆ B ∧ ¬ x ⊆ (A
∩ B)) ∧ (A ∩ B)
⋖ B)) → (A ∨ℋ ((A ∩ B)
∨ℋ x)) = (A ∨ℋ x)) |
| 26 | | chnlet 5431 |
. . . . . . . . . . . . 13
⊢ (((A
∩ B) ∈ Cℋ
∧ x ∈ Cℋ )
→ (¬ x ⊆ (A ∩ B)
↔ (A ∩ B) ⊂ ((A
∩ B) ∨ℋ x))) |
| 27 | 3, 26 | mpan 518 |
. . . . . . . . . . . 12
⊢ (x
∈ Cℋ → (¬ x ⊆ (A
∩ B) ↔ (A ∩ B) ⊂
((A ∩ B) ∨ℋ x))) |
| 28 | | chlubt 5426 |
. . . . . . . . . . . . . . 15
⊢ (((A
∩ B) ∈ Cℋ
∧ x ∈ Cℋ
∧ B ∈ Cℋ )
→ (((A ∩ B) ⊆ B
∧ x ⊆ B) ↔ ((A
∩ B) ∨ℋ x) ⊆ B)) |
| 29 | 3, 28 | mp3an1 639 |
. . . . . . . . . . . . . 14
⊢ ((x
∈ Cℋ ∧ B
∈ Cℋ ) → (((A ∩ B)
⊆ B ∧ x ⊆ B)
↔ ((A ∩ B) ∨ℋ x) ⊆ B)) |
| 30 | 2, 29 | mpan2 519 |
. . . . . . . . . . . . 13
⊢ (x
∈ Cℋ → (((A ∩ B)
⊆ B ∧ x ⊆ B)
↔ ((A ∩ B) ∨ℋ x) ⊆ B)) |
| 31 | | inss2 1658 |
. . . . . . . . . . . . . 14
⊢ (A
∩ B) ⊆ B |
| 32 | 31 | biantrur 544 |
. . . . . . . . . . . . 13
⊢ (x
⊆ B ↔ ((A ∩ B)
⊆ B ∧ x ⊆ B)) |
| 33 | 30, 32 | syl5bb 410 |
. . . . . . . . . . . 12
⊢ (x
∈ Cℋ → (x
⊆ B ↔ ((A ∩ B)
∨ℋ x) ⊆ B)) |
| 34 | 27, 33 | anbi12d 476 |
. . . . . . . . . . 11
⊢ (x
∈ Cℋ → ((¬ x ⊆ (A
∩ B) ∧ x ⊆ B)
↔ ((A ∩ B) ⊂ ((A
∩ B) ∨ℋ x) ∧ ((A
∩ B) ∨ℋ x) ⊆ B))) |
| 35 | | ancom 333 |
. . . . . . . . . . 11
⊢ ((x
⊆ B ∧ ¬ x ⊆ (A
∩ B)) ↔ (¬ x ⊆ (A
∩ B) ∧ x ⊆ B)) |
| 36 | 34, 35 | syl5bb 410 |
. . . . . . . . . 10
⊢ (x
∈ Cℋ → ((x ⊆ B
∧ ¬ x ⊆ (A ∩ B))
↔ ((A ∩ B) ⊂ ((A
∩ B) ∨ℋ x) ∧ ((A
∩ B) ∨ℋ x) ⊆ B))) |
| 37 | | chjclt 5330 |
. . . . . . . . . . . . 13
⊢ (((A
∩ B) ∈ Cℋ
∧ x ∈ Cℋ )
→ ((A ∩ B) ∨ℋ x) ∈ Cℋ ) |
| 38 | 3, 37 | mpan 518 |
. . . . . . . . . . . 12
⊢ (x
∈ Cℋ → ((A ∩ B)
∨ℋ x) ∈
Cℋ ) |
| 39 | | cvnbtwn2t 5719 |
. . . . . . . . . . . . . 14
⊢ (((A
∩ B) ∈ Cℋ
∧ B ∈ Cℋ
∧ ((A ∩ B) ∨ℋ x) ∈ Cℋ ) →
((A ∩ B) ⋖ B
→ (((A ∩ B) ⊂ ((A
∩ B) ∨ℋ x) ∧ ((A
∩ B) ∨ℋ x) ⊆ B)
→ ((A ∩ B) ∨ℋ x) = B))) |
| 40 | 3, 39 | mp3an1 639 |
. . . . . . . . . . . . 13
⊢ ((B
∈ Cℋ ∧ ((A
∩ B) ∨ℋ x) ∈ Cℋ ) →
((A ∩ B) ⋖ B
→ (((A ∩ B) ⊂ ((A
∩ B) ∨ℋ x) ∧ ((A
∩ B) ∨ℋ x) ⊆ B)
→ ((A ∩ B) ∨ℋ x) = B))) |
| 41 | 2, 40 | mpan 518 |
. . . . . . . . . . . 12
⊢ (((A
∩ B) ∨ℋ x) ∈ Cℋ →
((A ∩ B) ⋖ B
→ (((A ∩ B) ⊂ ((A
∩ B) ∨ℋ x) ∧ ((A
∩ B) ∨ℋ x) ⊆ B)
→ ((A ∩ B) ∨ℋ x) = B))) |
| 42 | 38, 41 | syl 12 |
. . . . . . . . . . 11
⊢ (x
∈ Cℋ → ((A ∩ B)
⋖ B → (((A ∩ B) ⊂
((A ∩ B) ∨ℋ x) ∧ ((A
∩ B) ∨ℋ x) ⊆ B)
→ ((A ∩ B) ∨ℋ x) = B))) |
| 43 | 42 | com23 32 |
. . . . . . . . . 10
⊢ (x
∈ Cℋ → (((A ∩ B) ⊂
((A ∩ B) ∨ℋ x) ∧ ((A
∩ B) ∨ℋ x) ⊆ B)
→ ((A ∩ B) ⋖ B
→ ((A ∩ B) ∨ℋ x) = B))) |
| 44 | 36, 43 | sylbid 178 |
. . . . . . . . 9
⊢ (x
∈ Cℋ → ((x ⊆ B
∧ ¬ x ⊆ (A ∩ B))
→ ((A ∩ B) ⋖ B
→ ((A ∩ B) ∨ℋ x) = B))) |
| 45 | 44 | imp32 281 |
. . . . . . . 8
⊢ ((x
∈ Cℋ ∧ ((x
⊆ B ∧ ¬ x ⊆ (A
∩ B)) ∧ (A ∩ B)
⋖ B)) → ((A ∩ B)
∨ℋ x) = B) |
| 46 | 45 | opreq2d 3013 |
. . . . . . 7
⊢ ((x
∈ Cℋ ∧ ((x
⊆ B ∧ ¬ x ⊆ (A
∩ B)) ∧ (A ∩ B)
⋖ B)) → (A ∨ℋ ((A ∩ B)
∨ℋ x)) = (A ∨ℋ B)) |
| 47 | 25, 46 | eqtr3d 1130 |
. . . . . 6
⊢ ((x
∈ Cℋ ∧ ((x
⊆ B ∧ ¬ x ⊆ (A
∩ B)) ∧ (A ∩ B)
⋖ B)) → (A ∨ℋ x) = (A
∨ℋ B)) |
| 48 | | atelch 5742 |
. . . . . 6
⊢ (x
∈ Atoms → x ∈
Cℋ ) |
| 49 | 47, 48 | sylan 343 |
. . . . 5
⊢ ((x
∈ Atoms ∧ ((x ⊆ B ∧ ¬ x
⊆ (A ∩ B)) ∧ (A
∩ B) ⋖ B)) → (A
∨ℋ x) = (A ∨ℋ B)) |
| 50 | 18, 49 | breqtrd 2081 |
. . . 4
⊢ ((x
∈ Atoms ∧ ((x ⊆ B ∧ ¬ x
⊆ (A ∩ B)) ∧ (A
∩ B) ⋖ B)) → A
⋖ (A ∨ℋ B)) |
| 51 | 50 | exp32 294 |
. . 3
⊢ (x
∈ Atoms → ((x ⊆ B ∧ ¬ x
⊆ (A ∩ B)) → ((A
∩ B) ⋖ B → A
⋖ (A ∨ℋ B)))) |
| 52 | 51 | r19.23aiv 1284 |
. 2
⊢ (∃x ∈ Atoms (x ⊆ B
∧ ¬ x ⊆ (A ∩ B))
→ ((A ∩ B) ⋖ B
→ A ⋖ (A ∨ℋ B))) |
| 53 | 7, 52 | mpcom 49 |
1
⊢ ((A
∩ B) ⋖ B → A
⋖ (A ∨ℋ B)) |