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| Mirrors > Home > ILE Home > Th. List > axmulcom | GIF version | ||
| Description: Multiplication of complex numbers is commutative. Axiom for real and complex numbers, derived from set theory. This construction-dependent theorem should not be referenced directly, nor should the proven axiom ax-mulcom 8233 be used later. Instead, use mulcom 8261. (Contributed by NM, 31-Aug-1995.) (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| axmulcom | ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 · 𝐵) = (𝐵 · 𝐴)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | dfcnqs 8161 | . 2 ⊢ ℂ = ((R × R) / ◡ E ) | |
| 2 | mulcnsrec 8163 | . 2 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → ([〈𝑥, 𝑦〉]◡ E · [〈𝑧, 𝑤〉]◡ E ) = [〈((𝑥 ·R 𝑧) +R (-1R ·R (𝑦 ·R 𝑤))), ((𝑦 ·R 𝑧) +R (𝑥 ·R 𝑤))〉]◡ E ) | |
| 3 | mulcnsrec 8163 | . 2 ⊢ (((𝑧 ∈ R ∧ 𝑤 ∈ R) ∧ (𝑥 ∈ R ∧ 𝑦 ∈ R)) → ([〈𝑧, 𝑤〉]◡ E · [〈𝑥, 𝑦〉]◡ E ) = [〈((𝑧 ·R 𝑥) +R (-1R ·R (𝑤 ·R 𝑦))), ((𝑤 ·R 𝑥) +R (𝑧 ·R 𝑦))〉]◡ E ) | |
| 4 | simpll 527 | . . . 4 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → 𝑥 ∈ R) | |
| 5 | simprl 531 | . . . 4 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → 𝑧 ∈ R) | |
| 6 | mulcomsrg 8077 | . . . 4 ⊢ ((𝑥 ∈ R ∧ 𝑧 ∈ R) → (𝑥 ·R 𝑧) = (𝑧 ·R 𝑥)) | |
| 7 | 4, 5, 6 | syl2anc 411 | . . 3 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → (𝑥 ·R 𝑧) = (𝑧 ·R 𝑥)) |
| 8 | simplr 529 | . . . . 5 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → 𝑦 ∈ R) | |
| 9 | simprr 533 | . . . . 5 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → 𝑤 ∈ R) | |
| 10 | mulcomsrg 8077 | . . . . 5 ⊢ ((𝑦 ∈ R ∧ 𝑤 ∈ R) → (𝑦 ·R 𝑤) = (𝑤 ·R 𝑦)) | |
| 11 | 8, 9, 10 | syl2anc 411 | . . . 4 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → (𝑦 ·R 𝑤) = (𝑤 ·R 𝑦)) |
| 12 | 11 | oveq2d 6068 | . . 3 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → (-1R ·R (𝑦 ·R 𝑤)) = (-1R ·R (𝑤 ·R 𝑦))) |
| 13 | 7, 12 | oveq12d 6070 | . 2 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → ((𝑥 ·R 𝑧) +R (-1R ·R (𝑦 ·R 𝑤))) = ((𝑧 ·R 𝑥) +R (-1R ·R (𝑤 ·R 𝑦)))) |
| 14 | mulcomsrg 8077 | . . . . 5 ⊢ ((𝑦 ∈ R ∧ 𝑧 ∈ R) → (𝑦 ·R 𝑧) = (𝑧 ·R 𝑦)) | |
| 15 | 8, 5, 14 | syl2anc 411 | . . . 4 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → (𝑦 ·R 𝑧) = (𝑧 ·R 𝑦)) |
| 16 | mulcomsrg 8077 | . . . . 5 ⊢ ((𝑥 ∈ R ∧ 𝑤 ∈ R) → (𝑥 ·R 𝑤) = (𝑤 ·R 𝑥)) | |
| 17 | 4, 9, 16 | syl2anc 411 | . . . 4 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → (𝑥 ·R 𝑤) = (𝑤 ·R 𝑥)) |
| 18 | 15, 17 | oveq12d 6070 | . . 3 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → ((𝑦 ·R 𝑧) +R (𝑥 ·R 𝑤)) = ((𝑧 ·R 𝑦) +R (𝑤 ·R 𝑥))) |
| 19 | mulclsr 8074 | . . . . 5 ⊢ ((𝑧 ∈ R ∧ 𝑦 ∈ R) → (𝑧 ·R 𝑦) ∈ R) | |
| 20 | 5, 8, 19 | syl2anc 411 | . . . 4 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → (𝑧 ·R 𝑦) ∈ R) |
| 21 | mulclsr 8074 | . . . . 5 ⊢ ((𝑤 ∈ R ∧ 𝑥 ∈ R) → (𝑤 ·R 𝑥) ∈ R) | |
| 22 | 9, 4, 21 | syl2anc 411 | . . . 4 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → (𝑤 ·R 𝑥) ∈ R) |
| 23 | addcomsrg 8075 | . . . 4 ⊢ (((𝑧 ·R 𝑦) ∈ R ∧ (𝑤 ·R 𝑥) ∈ R) → ((𝑧 ·R 𝑦) +R (𝑤 ·R 𝑥)) = ((𝑤 ·R 𝑥) +R (𝑧 ·R 𝑦))) | |
| 24 | 20, 22, 23 | syl2anc 411 | . . 3 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → ((𝑧 ·R 𝑦) +R (𝑤 ·R 𝑥)) = ((𝑤 ·R 𝑥) +R (𝑧 ·R 𝑦))) |
| 25 | 18, 24 | eqtrd 2267 | . 2 ⊢ (((𝑥 ∈ R ∧ 𝑦 ∈ R) ∧ (𝑧 ∈ R ∧ 𝑤 ∈ R)) → ((𝑦 ·R 𝑧) +R (𝑥 ·R 𝑤)) = ((𝑤 ·R 𝑥) +R (𝑧 ·R 𝑦))) |
| 26 | 1, 2, 3, 13, 25 | ecovicom 6879 | 1 ⊢ ((𝐴 ∈ ℂ ∧ 𝐵 ∈ ℂ) → (𝐴 · 𝐵) = (𝐵 · 𝐴)) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 = wceq 1398 ∈ wcel 2205 E cep 4410 ◡ccnv 4750 (class class class)co 6052 Rcnr 7617 -1Rcm1r 7620 +R cplr 7621 ·R cmr 7622 ℂcc 8130 · cmul 8137 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-in1 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-coll 4227 ax-sep 4230 ax-nul 4238 ax-pow 4289 ax-pr 4324 ax-un 4556 ax-setind 4661 ax-iinf 4712 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-ral 2527 df-rex 2528 df-reu 2529 df-rab 2531 df-v 2817 df-sbc 3045 df-csb 3141 df-dif 3215 df-un 3217 df-in 3219 df-ss 3226 df-nul 3511 df-pw 3673 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-int 3952 df-iun 3995 df-br 4112 df-opab 4174 df-mpt 4175 df-tr 4211 df-eprel 4412 df-id 4416 df-po 4419 df-iso 4420 df-iord 4489 df-on 4491 df-suc 4494 df-iom 4715 df-xp 4757 df-rel 4758 df-cnv 4759 df-co 4760 df-dm 4761 df-rn 4762 df-res 4763 df-ima 4764 df-iota 5314 df-fun 5356 df-fn 5357 df-f 5358 df-f1 5359 df-fo 5360 df-f1o 5361 df-fv 5362 df-ov 6055 df-oprab 6056 df-mpo 6057 df-1st 6336 df-2nd 6337 df-recs 6538 df-irdg 6603 df-1o 6649 df-2o 6650 df-oadd 6653 df-omul 6654 df-er 6769 df-ec 6771 df-qs 6775 df-ni 7624 df-pli 7625 df-mi 7626 df-lti 7627 df-plpq 7664 df-mpq 7665 df-enq 7667 df-nqqs 7668 df-plqqs 7669 df-mqqs 7670 df-1nqqs 7671 df-rq 7672 df-ltnqqs 7673 df-enq0 7744 df-nq0 7745 df-0nq0 7746 df-plq0 7747 df-mq0 7748 df-inp 7786 df-i1p 7787 df-iplp 7788 df-imp 7789 df-enr 8046 df-nr 8047 df-plr 8048 df-mr 8049 df-m1r 8053 df-c 8138 df-mul 8144 |
| This theorem is referenced by: rereceu 8209 recriota 8210 |
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