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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 32326 | . . . . . 6 ⊢ (((𝐵 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) ∧ (𝐵 𝑀ℋ* 𝐴 ∧ 𝐴 ⊆ 𝐶)) → ((𝐶 ∩ 𝐵) ∨ℋ 𝐴) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))) | |
| 2 | 1 | exp32 420 | . . . . 5 ⊢ ((𝐵 ∈ Cℋ ∧ 𝐴 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) → (𝐵 𝑀ℋ* 𝐴 → (𝐴 ⊆ 𝐶 → ((𝐶 ∩ 𝐵) ∨ℋ 𝐴) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))))) |
| 3 | 2 | 3com12 1123 | . . . 4 ⊢ ((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) → (𝐵 𝑀ℋ* 𝐴 → (𝐴 ⊆ 𝐶 → ((𝐶 ∩ 𝐵) ∨ℋ 𝐴) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))))) |
| 4 | 3 | imp32 418 | . . 3 ⊢ (((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) ∧ (𝐵 𝑀ℋ* 𝐴 ∧ 𝐴 ⊆ 𝐶)) → ((𝐶 ∩ 𝐵) ∨ℋ 𝐴) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))) |
| 5 | 4 | 3adantr3 1172 | . 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 31530 | . . . . . 6 ⊢ ((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → (𝐴 ∨ℋ 𝐵) = (𝐵 ∨ℋ 𝐴)) | |
| 7 | 6 | ineq2d 4170 | . . . . 5 ⊢ ((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → (𝐶 ∩ (𝐴 ∨ℋ 𝐵)) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))) |
| 8 | 7 | 3adant3 1132 | . . . 4 ⊢ ((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) → (𝐶 ∩ (𝐴 ∨ℋ 𝐵)) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))) |
| 9 | dfss2 3917 | . . . . 5 ⊢ (𝐶 ⊆ (𝐴 ∨ℋ 𝐵) ↔ (𝐶 ∩ (𝐴 ∨ℋ 𝐵)) = 𝐶) | |
| 10 | 9 | biimpi 216 | . . . 4 ⊢ (𝐶 ⊆ (𝐴 ∨ℋ 𝐵) → (𝐶 ∩ (𝐴 ∨ℋ 𝐵)) = 𝐶) |
| 11 | 8, 10 | sylan9req 2790 | . . 3 ⊢ (((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) ∧ 𝐶 ⊆ (𝐴 ∨ℋ 𝐵)) → (𝐶 ∩ (𝐵 ∨ℋ 𝐴)) = 𝐶) |
| 12 | 11 | 3ad2antr3 1191 | . 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 2769 | 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 395 ∧ w3a 1086 = wceq 1541 ∈ wcel 2113 ∩ cin 3898 ⊆ wss 3899 class class class wbr 5096 (class class class)co 7356 Cℋ cch 30953 ∨ℋ chj 30957 𝑀ℋ* cdmd 30991 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pr 5375 ax-hilex 31023 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-ral 3050 df-rex 3059 df-rab 3398 df-v 3440 df-sbc 3739 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4862 df-br 5097 df-opab 5159 df-id 5517 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-iota 6446 df-fun 6492 df-fv 6498 df-ov 7359 df-oprab 7360 df-mpo 7361 df-sh 31231 df-ch 31245 df-chj 31334 df-dmd 32305 |
| This theorem is referenced by: mdslle1i 32341 mdslj1i 32343 mdslj2i 32344 mdslmd1lem1 32349 |
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