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| Mirrors > Home > HSE Home > Th. List > shjcom | Structured version Visualization version GIF version | ||
| Description: Commutative law for Hilbert lattice join of subspaces. (Contributed by NM, 22-Jun-2004.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| shjcom | ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐴 ∨ℋ 𝐵) = (𝐵 ∨ℋ 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | shjval 31965 | . 2 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐴 ∨ℋ 𝐵) = (⊥‘(⊥‘(𝐴 ∪ 𝐵)))) | |
| 2 | shjval 31965 | . . . 4 ⊢ ((𝐵 ∈ Sℋ ∧ 𝐴 ∈ Sℋ ) → (𝐵 ∨ℋ 𝐴) = (⊥‘(⊥‘(𝐵 ∪ 𝐴)))) | |
| 3 | 2 | ancoms 464 | . . 3 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐵 ∨ℋ 𝐴) = (⊥‘(⊥‘(𝐵 ∪ 𝐴)))) |
| 4 | uncom 4159 | . . . . 5 ⊢ (𝐵 ∪ 𝐴) = (𝐴 ∪ 𝐵) | |
| 5 | 4 | fveq2i 6896 | . . . 4 ⊢ (⊥‘(𝐵 ∪ 𝐴)) = (⊥‘(𝐴 ∪ 𝐵)) |
| 6 | 5 | fveq2i 6896 | . . 3 ⊢ (⊥‘(⊥‘(𝐵 ∪ 𝐴))) = (⊥‘(⊥‘(𝐴 ∪ 𝐵))) |
| 7 | 3, 6 | eqtrdi 2814 | . 2 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐵 ∨ℋ 𝐴) = (⊥‘(⊥‘(𝐴 ∪ 𝐵)))) |
| 8 | 1, 7 | eqtr4d 2801 | 1 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐴 ∨ℋ 𝐵) = (𝐵 ∨ℋ 𝐴)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 = wceq 1569 ∈ wcel 2146 ∪ cun 4151 ‘cfv 6546 (class class class)co 7427 Sℋ csh 31542 ⊥cort 31544 ∨ℋ chj 31547 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1944 ax-6 2001 ax-7 2042 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2196 ax-12 2215 ax-ext 2735 ax-sep 5251 ax-nul 5262 ax-pr 5394 ax-hilex 31613 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2101 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2838 df-nfc 2912 df-ne 2959 df-ral 3080 df-rex 3090 df-rab 3416 df-v 3455 df-sbc 3742 df-ss 3900 df-dif 4049 df-in 4093 df-un 4153 df-nul 4281 df-if 4485 df-pw 4561 df-sn 4588 df-pr 4590 df-op 4838 df-uni 4870 df-br 5106 df-opab 5170 df-id 5549 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-iota 6500 df-fun 6548 df-fv 6554 df-ov 7430 df-oprab 7431 df-mpo 7432 df-sh 31821 df-chj 31924 |
| This theorem is used by: shlej2 31975 shjcomi 31985 shub2 31997 chjcom 32120 |
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