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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 31375 | . 2 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐴 ∨ℋ 𝐵) = (⊥‘(⊥‘(𝐴 ∪ 𝐵)))) | |
| 2 | shjval 31375 | . . . 4 ⊢ ((𝐵 ∈ Sℋ ∧ 𝐴 ∈ Sℋ ) → (𝐵 ∨ℋ 𝐴) = (⊥‘(⊥‘(𝐵 ∪ 𝐴)))) | |
| 3 | 2 | ancoms 458 | . . 3 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐵 ∨ℋ 𝐴) = (⊥‘(⊥‘(𝐵 ∪ 𝐴)))) |
| 4 | uncom 4108 | . . . . 5 ⊢ (𝐵 ∪ 𝐴) = (𝐴 ∪ 𝐵) | |
| 5 | 4 | fveq2i 6835 | . . . 4 ⊢ (⊥‘(𝐵 ∪ 𝐴)) = (⊥‘(𝐴 ∪ 𝐵)) |
| 6 | 5 | fveq2i 6835 | . . 3 ⊢ (⊥‘(⊥‘(𝐵 ∪ 𝐴))) = (⊥‘(⊥‘(𝐴 ∪ 𝐵))) |
| 7 | 3, 6 | eqtrdi 2785 | . 2 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐵 ∨ℋ 𝐴) = (⊥‘(⊥‘(𝐴 ∪ 𝐵)))) |
| 8 | 1, 7 | eqtr4d 2772 | 1 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐴 ∨ℋ 𝐵) = (𝐵 ∨ℋ 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∧ wa 395 = wceq 1541 ∈ wcel 2113 ∪ cun 3897 ‘cfv 6490 (class class class)co 7356 Sℋ csh 30952 ⊥cort 30954 ∨ℋ chj 30957 |
| 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-chj 31334 |
| This theorem is referenced by: shlej2 31385 shjcomi 31395 shub2 31407 chjcom 31530 |
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