Proof of Theorem atmod2i2
| Step | Hyp | Ref
| Expression |
| 1 | | hllat 39364 |
. . . . . 6
⊢ (𝐾 ∈ HL → 𝐾 ∈ Lat) |
| 2 | 1 | 3ad2ant1 1134 |
. . . . 5
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → 𝐾 ∈ Lat) |
| 3 | | simp21 1207 |
. . . . . 6
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → 𝑃 ∈ 𝐴) |
| 4 | | atmod.b |
. . . . . . 7
⊢ 𝐵 = (Base‘𝐾) |
| 5 | | atmod.a |
. . . . . . 7
⊢ 𝐴 = (Atoms‘𝐾) |
| 6 | 4, 5 | atbase 39290 |
. . . . . 6
⊢ (𝑃 ∈ 𝐴 → 𝑃 ∈ 𝐵) |
| 7 | 3, 6 | syl 17 |
. . . . 5
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → 𝑃 ∈ 𝐵) |
| 8 | | simp23 1209 |
. . . . 5
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → 𝑌 ∈ 𝐵) |
| 9 | | atmod.j |
. . . . . 6
⊢ ∨ =
(join‘𝐾) |
| 10 | 4, 9 | latjcom 18492 |
. . . . 5
⊢ ((𝐾 ∈ Lat ∧ 𝑃 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑃 ∨ 𝑌) = (𝑌 ∨ 𝑃)) |
| 11 | 2, 7, 8, 10 | syl3anc 1373 |
. . . 4
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → (𝑃 ∨ 𝑌) = (𝑌 ∨ 𝑃)) |
| 12 | 11 | oveq1d 7446 |
. . 3
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → ((𝑃 ∨ 𝑌) ∧ 𝑋) = ((𝑌 ∨ 𝑃) ∧ 𝑋)) |
| 13 | | simp22 1208 |
. . . 4
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → 𝑋 ∈ 𝐵) |
| 14 | 4, 9 | latjcl 18484 |
. . . . 5
⊢ ((𝐾 ∈ Lat ∧ 𝑃 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) → (𝑃 ∨ 𝑌) ∈ 𝐵) |
| 15 | 2, 7, 8, 14 | syl3anc 1373 |
. . . 4
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → (𝑃 ∨ 𝑌) ∈ 𝐵) |
| 16 | | atmod.m |
. . . . 5
⊢ ∧ =
(meet‘𝐾) |
| 17 | 4, 16 | latmcom 18508 |
. . . 4
⊢ ((𝐾 ∈ Lat ∧ 𝑋 ∈ 𝐵 ∧ (𝑃 ∨ 𝑌) ∈ 𝐵) → (𝑋 ∧ (𝑃 ∨ 𝑌)) = ((𝑃 ∨ 𝑌) ∧ 𝑋)) |
| 18 | 2, 13, 15, 17 | syl3anc 1373 |
. . 3
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → (𝑋 ∧ (𝑃 ∨ 𝑌)) = ((𝑃 ∨ 𝑌) ∧ 𝑋)) |
| 19 | | simp1 1137 |
. . . 4
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → 𝐾 ∈ HL) |
| 20 | | simp3 1139 |
. . . 4
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → 𝑌 ≤ 𝑋) |
| 21 | | atmod.l |
. . . . 5
⊢ ≤ =
(le‘𝐾) |
| 22 | 4, 21, 9, 16, 5 | atmod1i2 39861 |
. . . 4
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑌 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → (𝑌 ∨ (𝑃 ∧ 𝑋)) = ((𝑌 ∨ 𝑃) ∧ 𝑋)) |
| 23 | 19, 3, 8, 13, 20, 22 | syl131anc 1385 |
. . 3
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → (𝑌 ∨ (𝑃 ∧ 𝑋)) = ((𝑌 ∨ 𝑃) ∧ 𝑋)) |
| 24 | 12, 18, 23 | 3eqtr4d 2787 |
. 2
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → (𝑋 ∧ (𝑃 ∨ 𝑌)) = (𝑌 ∨ (𝑃 ∧ 𝑋))) |
| 25 | 4, 16 | latmcl 18485 |
. . . 4
⊢ ((𝐾 ∈ Lat ∧ 𝑃 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → (𝑃 ∧ 𝑋) ∈ 𝐵) |
| 26 | 2, 7, 13, 25 | syl3anc 1373 |
. . 3
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → (𝑃 ∧ 𝑋) ∈ 𝐵) |
| 27 | 4, 9 | latjcom 18492 |
. . 3
⊢ ((𝐾 ∈ Lat ∧ 𝑌 ∈ 𝐵 ∧ (𝑃 ∧ 𝑋) ∈ 𝐵) → (𝑌 ∨ (𝑃 ∧ 𝑋)) = ((𝑃 ∧ 𝑋) ∨ 𝑌)) |
| 28 | 2, 8, 26, 27 | syl3anc 1373 |
. 2
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → (𝑌 ∨ (𝑃 ∧ 𝑋)) = ((𝑃 ∧ 𝑋) ∨ 𝑌)) |
| 29 | 4, 16 | latmcom 18508 |
. . . 4
⊢ ((𝐾 ∈ Lat ∧ 𝑃 ∈ 𝐵 ∧ 𝑋 ∈ 𝐵) → (𝑃 ∧ 𝑋) = (𝑋 ∧ 𝑃)) |
| 30 | 2, 7, 13, 29 | syl3anc 1373 |
. . 3
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → (𝑃 ∧ 𝑋) = (𝑋 ∧ 𝑃)) |
| 31 | 30 | oveq1d 7446 |
. 2
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → ((𝑃 ∧ 𝑋) ∨ 𝑌) = ((𝑋 ∧ 𝑃) ∨ 𝑌)) |
| 32 | 24, 28, 31 | 3eqtrrd 2782 |
1
⊢ ((𝐾 ∈ HL ∧ (𝑃 ∈ 𝐴 ∧ 𝑋 ∈ 𝐵 ∧ 𝑌 ∈ 𝐵) ∧ 𝑌 ≤ 𝑋) → ((𝑋 ∧ 𝑃) ∨ 𝑌) = (𝑋 ∧ (𝑃 ∨ 𝑌))) |