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| Mirrors > Home > HSE Home > Th. List > dmdsl3 | Structured version Visualization version GIF version | ||
| Description: Sublattice mapping for a dual-modular pair. Part of Theorem 1.3 of [MaedaMaeda] p. 2. (Contributed by NM, 26-Apr-2006.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| dmdsl3 | ⊢ (((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) ∧ (𝐵 𝑀ℋ* 𝐴 ∧ 𝐴 ⊆ 𝐶 ∧ 𝐶 ⊆ (𝐴 ∨ℋ 𝐵))) → ((𝐶 ∩ 𝐵) ∨ℋ 𝐴) = 𝐶) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dmdi 32391 | . . . . . 6 ⊢ (((𝐵 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) ∧ (𝐵 𝑀ℋ* 𝐴 ∧ 𝐴 ⊆ 𝐶)) → ((𝐶 ∩ 𝐵) ∨ℋ 𝐴) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))) | |
| 2 | 1 | exp32 421 | . . . . 5 ⊢ ((𝐵 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) → (𝐵 𝑀ℋ* 𝐴 → (𝐴 ⊆ 𝐶 → ((𝐶 ∩ 𝐵) ∨ℋ 𝐴) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))))) |
| 3 | 2 | 3com12 1129 | . . . 4 ⊢ ((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) → (𝐵 𝑀ℋ* 𝐴 → (𝐴 ⊆ 𝐶 → ((𝐶 ∩ 𝐵) ∨ℋ 𝐴) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))))) |
| 4 | 3 | imp32 419 | . . 3 ⊢ (((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) ∧ (𝐵 𝑀ℋ* 𝐴 ∧ 𝐴 ⊆ 𝐶)) → ((𝐶 ∩ 𝐵) ∨ℋ 𝐴) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))) |
| 5 | 4 | 3adantr3 1178 | . 2 ⊢ (((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) ∧ (𝐵 𝑀ℋ* 𝐴 ∧ 𝐴 ⊆ 𝐶 ∧ 𝐶 ⊆ (𝐴 ∨ℋ 𝐵))) → ((𝐶 ∩ 𝐵) ∨ℋ 𝐴) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))) |
| 6 | chjcom 31595 | . . . . . 6 ⊢ ((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → (𝐴 ∨ℋ 𝐵) = (𝐵 ∨ℋ 𝐴)) | |
| 7 | 6 | ineq2d 4149 | . . . . 5 ⊢ ((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → (𝐶 ∩ (𝐴 ∨ℋ 𝐵)) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))) |
| 8 | 7 | 3adant3 1138 | . . . 4 ⊢ ((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) → (𝐶 ∩ (𝐴 ∨ℋ 𝐵)) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))) |
| 9 | dfss2 3901 | . . . . 5 ⊢ (𝐶 ⊆ (𝐴 ∨ℋ 𝐵) ↔ (𝐶 ∩ (𝐴 ∨ℋ 𝐵)) = 𝐶) | |
| 10 | 9 | biimpi 217 | . . . 4 ⊢ (𝐶 ⊆ (𝐴 ∨ℋ 𝐵) → (𝐶 ∩ (𝐴 ∨ℋ 𝐵)) = 𝐶) |
| 11 | 8, 10 | sylan9req 2795 | . . 3 ⊢ (((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) ∧ 𝐶 ⊆ (𝐴 ∨ℋ 𝐵)) → (𝐶 ∩ (𝐵 ∨ℋ 𝐴)) = 𝐶) |
| 12 | 11 | 3ad2antr3 1197 | . 2 ⊢ (((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) ∧ (𝐵 𝑀ℋ* 𝐴 ∧ 𝐴 ⊆ 𝐶 ∧ 𝐶 ⊆ (𝐴 ∨ℋ 𝐵))) → (𝐶 ∩ (𝐵 ∨ℋ 𝐴)) = 𝐶) |
| 13 | 5, 12 | eqtrd 2774 | 1 ⊢ (((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) ∧ (𝐵 𝑀ℋ* 𝐴 ∧ 𝐴 ⊆ 𝐶 ∧ 𝐶 ⊆ (𝐴 ∨ℋ 𝐵))) → ((𝐶 ∩ 𝐵) ∨ℋ 𝐴) = 𝐶) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 396 ∧ w3a 1092 = wceq 1547 ∈ wcel 2119 ∩ cin 3882 ⊆ wss 3883 class class class wbr 5072 (class class class)co 7356 Cℋ cch 31018 ∨ℋ chj 31022 𝑀ℋ* cdmd 31056 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2711 ax-sep 5218 ax-nul 5228 ax-pr 5362 ax-hilex 31088 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2718 df-cleq 2731 df-clel 2814 df-nfc 2888 df-ne 2935 df-ral 3054 df-rex 3064 df-rab 3392 df-v 3433 df-sbc 3724 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-nul 4262 df-if 4455 df-pw 4531 df-sn 4556 df-pr 4558 df-op 4562 df-uni 4839 df-br 5073 df-opab 5135 df-id 5513 df-xp 5624 df-rel 5625 df-cnv 5626 df-co 5627 df-dm 5628 df-rn 5629 df-res 5630 df-ima 5631 df-iota 6441 df-fun 6487 df-fv 6493 df-ov 7359 df-oprab 7360 df-mpo 7361 df-sh 31296 df-ch 31310 df-chj 31399 df-dmd 32370 |
| This theorem is referenced by: mdslle1i 32406 mdslj1i 32408 mdslj2i 32409 mdslmd1lem1 32414 |
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