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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 32321 | . . . . . 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 1124 | . . . 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 31525 | . . . . . 6 ⊢ ((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → (𝐴 ∨ℋ 𝐵) = (𝐵 ∨ℋ 𝐴)) | |
| 7 | 6 | ineq2d 4220 | . . . . 5 ⊢ ((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ) → (𝐶 ∩ (𝐴 ∨ℋ 𝐵)) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))) |
| 8 | 7 | 3adant3 1133 | . . . 4 ⊢ ((𝐴 ∈ Cℋ ∧ 𝐵 ∈ Cℋ ∧ 𝐶 ∈ Cℋ ) → (𝐶 ∩ (𝐴 ∨ℋ 𝐵)) = (𝐶 ∩ (𝐵 ∨ℋ 𝐴))) |
| 9 | dfss2 3969 | . . . . 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 2798 | . . 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 2777 | 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 1087 = wceq 1540 ∈ wcel 2108 ∩ cin 3950 ⊆ wss 3951 class class class wbr 5143 (class class class)co 7431 Cℋ cch 30948 ∨ℋ chj 30952 𝑀ℋ* cdmd 30986 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2708 ax-sep 5296 ax-nul 5306 ax-pr 5432 ax-hilex 31018 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2540 df-eu 2569 df-clab 2715 df-cleq 2729 df-clel 2816 df-nfc 2892 df-ne 2941 df-ral 3062 df-rex 3071 df-rab 3437 df-v 3482 df-sbc 3789 df-dif 3954 df-un 3956 df-in 3958 df-ss 3968 df-nul 4334 df-if 4526 df-pw 4602 df-sn 4627 df-pr 4629 df-op 4633 df-uni 4908 df-br 5144 df-opab 5206 df-id 5578 df-xp 5691 df-rel 5692 df-cnv 5693 df-co 5694 df-dm 5695 df-rn 5696 df-res 5697 df-ima 5698 df-iota 6514 df-fun 6563 df-fv 6569 df-ov 7434 df-oprab 7435 df-mpo 7436 df-sh 31226 df-ch 31240 df-chj 31329 df-dmd 32300 |
| This theorem is referenced by: mdslle1i 32336 mdslj1i 32338 mdslj2i 32339 mdslmd1lem1 32344 |
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