Proof of Theorem fh1
| Step | Hyp | Ref
| Expression |
| 1 | | fh1.1 |
. . . . 5
⊢ A
∈ Cℋ |
| 2 | | fh1.2 |
. . . . 5
⊢ B
∈ Cℋ |
| 3 | 1, 2 | chincl 5382 |
. . . 4
⊢ (A
∩ B) ∈
Cℋ |
| 4 | | fh1.3 |
. . . . 5
⊢ C
∈ Cℋ |
| 5 | 1, 4 | chincl 5382 |
. . . 4
⊢ (A
∩ C) ∈
Cℋ |
| 6 | 3, 5 | chjcl 5379 |
. . 3
⊢ ((A
∩ B) ∨ℋ (A ∩ C))
∈ Cℋ |
| 7 | 2, 4 | chjcl 5379 |
. . . . 5
⊢ (B
∨ℋ C) ∈
Cℋ |
| 8 | 1, 7 | chincl 5382 |
. . . 4
⊢ (A
∩ (B ∨ℋ C)) ∈ Cℋ |
| 9 | 8 | chshi 5132 |
. . 3
⊢ (A
∩ (B ∨ℋ C)) ∈ Sℋ |
| 10 | 1, 2, 4 | ledi 5447 |
. . 3
⊢ ((A
∩ B) ∨ℋ (A ∩ C))
⊆ (A ∩ (B ∨ℋ C)) |
| 11 | | incom 1636 |
. . . . 5
⊢ (A
∩ (B ∨ℋ C)) = ((B
∨ℋ C) ∩ A) |
| 12 | 3, 5 | chdmj1 5402 |
. . . . . 6
⊢ (⊥ ‘((A ∩ B)
∨ℋ (A ∩ C))) = ((⊥ ‘(A ∩ B))
∩ (⊥ ‘(A ∩ C))) |
| 13 | 1, 2 | chdmm1 5398 |
. . . . . . 7
⊢ (⊥ ‘(A ∩ B)) =
((⊥ ‘A) ∨ℋ
(⊥ ‘B)) |
| 14 | 1, 4 | chdmm1 5398 |
. . . . . . 7
⊢ (⊥ ‘(A ∩ C)) =
((⊥ ‘A) ∨ℋ
(⊥ ‘C)) |
| 15 | 13, 14 | ineq12i 1643 |
. . . . . 6
⊢ ((⊥ ‘(A ∩ B))
∩ (⊥ ‘(A ∩ C))) = (((⊥ ‘A) ∨ℋ (⊥ ‘B)) ∩ ((⊥ ‘A) ∨ℋ (⊥ ‘C))) |
| 16 | 12, 15 | eqtr 1119 |
. . . . 5
⊢ (⊥ ‘((A ∩ B)
∨ℋ (A ∩ C))) = (((⊥ ‘A) ∨ℋ (⊥ ‘B)) ∩ ((⊥ ‘A) ∨ℋ (⊥ ‘C))) |
| 17 | 11, 16 | ineq12i 1643 |
. . . 4
⊢ ((A
∩ (B ∨ℋ C)) ∩ (⊥ ‘((A ∩ B)
∨ℋ (A ∩ C)))) = (((B
∨ℋ C) ∩ A) ∩ (((⊥ ‘A) ∨ℋ (⊥ ‘B)) ∩ ((⊥ ‘A) ∨ℋ (⊥ ‘C)))) |
| 18 | | inass 1650 |
. . . . 5
⊢ (((B
∨ℋ C) ∩ A) ∩ (((⊥ ‘A) ∨ℋ (⊥ ‘B)) ∩ ((⊥ ‘A) ∨ℋ (⊥ ‘C)))) = ((B
∨ℋ C) ∩ (A ∩ (((⊥ ‘A) ∨ℋ (⊥ ‘B)) ∩ ((⊥ ‘A) ∨ℋ (⊥ ‘C))))) |
| 19 | | fh1.4 |
. . . . . . . . . 10
⊢ A Com
B |
| 20 | 1, 2, 19 | cmcm2i 5507 |
. . . . . . . . 9
⊢ A Com
(⊥ ‘B) |
| 21 | 2 | chocl 5192 |
. . . . . . . . . 10
⊢ (⊥ ‘B) ∈ Cℋ |
| 22 | 1, 21 | cmbr3 5509 |
. . . . . . . . 9
⊢ (A Com
(⊥ ‘B) ↔ (A ∩ ((⊥ ‘A) ∨ℋ (⊥ ‘B))) = (A ∩
(⊥ ‘B))) |
| 23 | 20, 22 | mpbi 164 |
. . . . . . . 8
⊢ (A
∩ ((⊥ ‘A)
∨ℋ (⊥ ‘B)))
= (A ∩ (⊥ ‘B)) |
| 24 | | fh1.5 |
. . . . . . . . . 10
⊢ A Com
C |
| 25 | 1, 4, 24 | cmcm2i 5507 |
. . . . . . . . 9
⊢ A Com
(⊥ ‘C) |
| 26 | 4 | chocl 5192 |
. . . . . . . . . 10
⊢ (⊥ ‘C) ∈ Cℋ |
| 27 | 1, 26 | cmbr3 5509 |
. . . . . . . . 9
⊢ (A Com
(⊥ ‘C) ↔ (A ∩ ((⊥ ‘A) ∨ℋ (⊥ ‘C))) = (A ∩
(⊥ ‘C))) |
| 28 | 25, 27 | mpbi 164 |
. . . . . . . 8
⊢ (A
∩ ((⊥ ‘A)
∨ℋ (⊥ ‘C)))
= (A ∩ (⊥ ‘C)) |
| 29 | 23, 28 | ineq12i 1643 |
. . . . . . 7
⊢ ((A
∩ ((⊥ ‘A)
∨ℋ (⊥ ‘B)))
∩ (A ∩ ((⊥ ‘A) ∨ℋ (⊥ ‘C)))) = ((A
∩ (⊥ ‘B)) ∩ (A ∩ (⊥ ‘C))) |
| 30 | | inindi 1654 |
. . . . . . 7
⊢ (A
∩ (((⊥ ‘A)
∨ℋ (⊥ ‘B))
∩ ((⊥ ‘A)
∨ℋ (⊥ ‘C)))) = ((A
∩ ((⊥ ‘A)
∨ℋ (⊥ ‘B)))
∩ (A ∩ ((⊥ ‘A) ∨ℋ (⊥ ‘C)))) |
| 31 | | inindi 1654 |
. . . . . . 7
⊢ (A
∩ ((⊥ ‘B) ∩ (⊥
‘C))) = ((A ∩ (⊥ ‘B)) ∩ (A
∩ (⊥ ‘C))) |
| 32 | 29, 30, 31 | 3eqtr4 1126 |
. . . . . 6
⊢ (A
∩ (((⊥ ‘A)
∨ℋ (⊥ ‘B))
∩ ((⊥ ‘A)
∨ℋ (⊥ ‘C)))) = (A ∩
((⊥ ‘B) ∩ (⊥
‘C))) |
| 33 | 32 | ineq2i 1642 |
. . . . 5
⊢ ((B
∨ℋ C) ∩ (A ∩ (((⊥ ‘A) ∨ℋ (⊥ ‘B)) ∩ ((⊥ ‘A) ∨ℋ (⊥ ‘C))))) = ((B
∨ℋ C) ∩ (A ∩ ((⊥ ‘B) ∩ (⊥ ‘C)))) |
| 34 | | in12 1651 |
. . . . 5
⊢ ((B
∨ℋ C) ∩ (A ∩ ((⊥ ‘B) ∩ (⊥ ‘C)))) = (A ∩
((B ∨ℋ C) ∩ ((⊥ ‘B) ∩ (⊥ ‘C)))) |
| 35 | 18, 33, 34 | 3eqtr 1123 |
. . . 4
⊢ (((B
∨ℋ C) ∩ A) ∩ (((⊥ ‘A) ∨ℋ (⊥ ‘B)) ∩ ((⊥ ‘A) ∨ℋ (⊥ ‘C)))) = (A ∩
((B ∨ℋ C) ∩ ((⊥ ‘B) ∩ (⊥ ‘C)))) |
| 36 | 2, 4 | chdmj1 5402 |
. . . . . . . 8
⊢ (⊥ ‘(B ∨ℋ C)) = ((⊥ ‘B) ∩ (⊥ ‘C)) |
| 37 | 36 | ineq2i 1642 |
. . . . . . 7
⊢ ((B
∨ℋ C) ∩ (⊥
‘(B ∨ℋ C))) = ((B
∨ℋ C) ∩ ((⊥
‘B) ∩ (⊥ ‘C))) |
| 38 | 7 | chocin 5376 |
. . . . . . 7
⊢ ((B
∨ℋ C) ∩ (⊥
‘(B ∨ℋ C))) = 0ℋ |
| 39 | 37, 38 | eqtr3 1121 |
. . . . . 6
⊢ ((B
∨ℋ C) ∩ ((⊥
‘B) ∩ (⊥ ‘C))) = 0ℋ |
| 40 | 39 | ineq2i 1642 |
. . . . 5
⊢ (A
∩ ((B ∨ℋ C) ∩ ((⊥ ‘B) ∩ (⊥ ‘C)))) = (A ∩
0ℋ) |
| 41 | 1 | chm0 5411 |
. . . . 5
⊢ (A
∩ 0ℋ) = 0ℋ |
| 42 | 40, 41 | eqtr 1119 |
. . . 4
⊢ (A
∩ ((B ∨ℋ C) ∩ ((⊥ ‘B) ∩ (⊥ ‘C)))) = 0ℋ |
| 43 | 17, 35, 42 | 3eqtr 1123 |
. . 3
⊢ ((A
∩ (B ∨ℋ C)) ∩ (⊥ ‘((A ∩ B)
∨ℋ (A ∩ C)))) = 0ℋ |
| 44 | 6, 9, 10, 43 | omlsi 5250 |
. 2
⊢ ((A
∩ B) ∨ℋ (A ∩ C)) =
(A ∩ (B ∨ℋ C)) |
| 45 | 44 | cleqcomi 1105 |
1
⊢ (A
∩ (B ∨ℋ C)) = ((A ∩
B) ∨ℋ (A ∩ C)) |