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| Mirrors > Home > HSE Home > Th. List > shscom | Structured version Visualization version GIF version | ||
| Description: Commutative law for subspace sum. (Contributed by NM, 15-Dec-2004.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| shscom | ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐴 +ℋ 𝐵) = (𝐵 +ℋ 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | shel 31302 | . . . . . . . . 9 ⊢ ((𝐴 ∈ Sℋ ∧ 𝑦 ∈ 𝐴) → 𝑦 ∈ ℋ) | |
| 2 | shel 31302 | . . . . . . . . 9 ⊢ ((𝐵 ∈ Sℋ ∧ 𝑧 ∈ 𝐵) → 𝑧 ∈ ℋ) | |
| 3 | 1, 2 | anim12i 620 | . . . . . . . 8 ⊢ (((𝐴 ∈ Sℋ ∧ 𝑦 ∈ 𝐴) ∧ (𝐵 ∈ Sℋ ∧ 𝑧 ∈ 𝐵)) → (𝑦 ∈ ℋ ∧ 𝑧 ∈ ℋ)) |
| 4 | 3 | an4s 667 | . . . . . . 7 ⊢ (((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) ∧ (𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐵)) → (𝑦 ∈ ℋ ∧ 𝑧 ∈ ℋ)) |
| 5 | ax-hvcom 31092 | . . . . . . 7 ⊢ ((𝑦 ∈ ℋ ∧ 𝑧 ∈ ℋ) → (𝑦 +ℎ 𝑧) = (𝑧 +ℎ 𝑦)) | |
| 6 | 4, 5 | syl 17 | . . . . . 6 ⊢ (((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) ∧ (𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐵)) → (𝑦 +ℎ 𝑧) = (𝑧 +ℎ 𝑦)) |
| 7 | 6 | eqeq2d 2752 | . . . . 5 ⊢ (((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) ∧ (𝑦 ∈ 𝐴 ∧ 𝑧 ∈ 𝐵)) → (𝑥 = (𝑦 +ℎ 𝑧) ↔ 𝑥 = (𝑧 +ℎ 𝑦))) |
| 8 | 7 | 2rexbidva 3204 | . . . 4 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑦 +ℎ 𝑧) ↔ ∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑧 +ℎ 𝑦))) |
| 9 | rexcom 3270 | . . . 4 ⊢ (∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑧 +ℎ 𝑦) ↔ ∃𝑧 ∈ 𝐵 ∃𝑦 ∈ 𝐴 𝑥 = (𝑧 +ℎ 𝑦)) | |
| 10 | 8, 9 | bitrdi 289 | . . 3 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑦 +ℎ 𝑧) ↔ ∃𝑧 ∈ 𝐵 ∃𝑦 ∈ 𝐴 𝑥 = (𝑧 +ℎ 𝑦))) |
| 11 | shsel 31405 | . . 3 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝑥 ∈ (𝐴 +ℋ 𝐵) ↔ ∃𝑦 ∈ 𝐴 ∃𝑧 ∈ 𝐵 𝑥 = (𝑦 +ℎ 𝑧))) | |
| 12 | shsel 31405 | . . . 4 ⊢ ((𝐵 ∈ Sℋ ∧ 𝐴 ∈ Sℋ ) → (𝑥 ∈ (𝐵 +ℋ 𝐴) ↔ ∃𝑧 ∈ 𝐵 ∃𝑦 ∈ 𝐴 𝑥 = (𝑧 +ℎ 𝑦))) | |
| 13 | 12 | ancoms 460 | . . 3 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝑥 ∈ (𝐵 +ℋ 𝐴) ↔ ∃𝑧 ∈ 𝐵 ∃𝑦 ∈ 𝐴 𝑥 = (𝑧 +ℎ 𝑦))) |
| 14 | 10, 11, 13 | 3bitr4d 313 | . 2 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝑥 ∈ (𝐴 +ℋ 𝐵) ↔ 𝑥 ∈ (𝐵 +ℋ 𝐴))) |
| 15 | 14 | eqrdv 2739 | 1 ⊢ ((𝐴 ∈ Sℋ ∧ 𝐵 ∈ Sℋ ) → (𝐴 +ℋ 𝐵) = (𝐵 +ℋ 𝐴)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 208 ∧ wa 397 = wceq 1548 ∈ wcel 2121 ∃wrex 3065 (class class class)co 7359 ℋchba 31010 +ℎ cva 31011 Sℋ csh 31019 +ℋ cph 31022 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-rep 5201 ax-sep 5220 ax-nul 5230 ax-pow 5296 ax-pr 5364 ax-un 7681 ax-resscn 11091 ax-1cn 11092 ax-icn 11093 ax-addcl 11094 ax-addrcl 11095 ax-mulcl 11096 ax-mulrcl 11097 ax-mulcom 11098 ax-addass 11099 ax-mulass 11100 ax-distr 11101 ax-i2m1 11102 ax-1ne0 11103 ax-1rid 11104 ax-rnegex 11105 ax-rrecex 11106 ax-cnre 11107 ax-pre-lttri 11108 ax-pre-lttrn 11109 ax-pre-ltadd 11110 ax-hilex 31090 ax-hfvadd 31091 ax-hvcom 31092 ax-hvass 31093 ax-hv0cl 31094 ax-hvaddid 31095 ax-hfvmul 31096 ax-hvmulid 31097 ax-hvdistr2 31100 ax-hvmul0 31101 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3725 df-csb 3833 df-dif 3887 df-un 3889 df-in 3891 df-ss 3901 df-nul 4264 df-if 4457 df-pw 4533 df-sn 4558 df-pr 4560 df-op 4564 df-uni 4841 df-iun 4925 df-br 5075 df-opab 5137 df-mpt 5156 df-id 5515 df-po 5528 df-so 5529 df-xp 5626 df-rel 5627 df-cnv 5628 df-co 5629 df-dm 5630 df-rn 5631 df-res 5632 df-ima 5633 df-iota 6444 df-fun 6490 df-fn 6491 df-f 6492 df-f1 6493 df-fo 6494 df-f1o 6495 df-fv 6496 df-riota 7316 df-ov 7362 df-oprab 7363 df-mpo 7364 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11177 df-mnf 11178 df-ltxr 11180 df-sub 11375 df-neg 11376 df-grpo 30584 df-ablo 30636 df-hvsub 31062 df-sh 31298 df-shs 31399 |
| This theorem is referenced by: shsel2 31413 shsub2 31416 shscomi 31454 pjpjpre 31510 chscllem1 31728 chscllem2 31729 chscllem3 31730 chscllem4 31731 |
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