| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > mullid | Structured version Visualization version GIF version | ||
| Description: Identity law for multiplication. See mulrid 11333 for commuted version. (Contributed by NM, 8-Oct-1999.) |
| Ref | Expression |
|---|---|
| mullid | ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 11285 | . . 3 ⊢ 1 ∈ ℂ | |
| 2 | mulcom 11313 | . . 3 ⊢ ((1 ∈ ℂ ∧ 𝐴 ∈ ℂ) → (1 · 𝐴) = (𝐴 · 1)) | |
| 3 | 1, 2 | mpan 703 | . 2 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = (𝐴 · 1)) |
| 4 | mulrid 11333 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴 · 1) = 𝐴) | |
| 5 | 3, 4 | eqtrd 2798 | 1 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 = wceq 1570 ∈ wcel 2147 (class class class)co 7443 ℂcc 11225 1c1 11228 · cmul 11232 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-ext 2735 ax-resscn 11284 ax-1cn 11285 ax-icn 11286 ax-addcl 11287 ax-mulcl 11289 ax-mulcom 11291 ax-mulass 11293 ax-distr 11294 ax-1rid 11297 ax-cnre 11300 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-sb 2102 df-clab 2742 df-cleq 2755 df-clel 2839 df-rex 3091 df-rab 3417 df-v 3456 df-ss 3901 df-dif 4050 df-un 4154 df-nul 4282 df-if 4486 df-sn 4589 df-pr 4591 df-op 4839 df-uni 4871 df-br 5107 df-iota 6512 df-fv 6566 df-ov 7446 |
| This theorem is used by: mullidi 11341 mullidd 11354 muladd11 11507 1p1times 11508 mul02lem1 11513 cnegex2 11519 mulm1 11784 div1 12033 subdivcomb2 12040 recdiv 12050 divdiv2 12056 conjmul 12061 ser1const 14228 expp1 14238 recan 15533 arisum 16058 geo2sum 16071 prodrblem 16125 prodmolem2a 16130 risefac1 16228 fallfac1 16229 bpoly3 16253 bpoly4 16254 sinhval 16351 coshval 16352 demoivreALT 16398 gcdadd 16727 gcdid 16728 cncrng 21729 cnfld1 21733 blcvx 25147 icccvx 25301 cnlmod 25491 coeidp 26612 dgrid 26613 quartlem1 27215 asinsinlem 27249 asinsin 27250 atantan 27281 musumsum 27549 brbtwn2 29513 axsegconlem1 29525 ax5seglem1 29536 ax5seglem2 29537 ax5seglem4 29540 ax5seglem5 29541 axeuclid 29571 axcontlem2 29573 axcontlem4 29575 cncvcOLD 31215 dvcosax 47141 sin3t 48122 cos3t 48123 sin5tlem4 48127 sqrtnpoly 48148 |
| Copyright terms: Public domain | W3C validator |