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| Mirrors > Home > MPE Home > Th. List > mullid | Structured version Visualization version GIF version | ||
| Description: Identity law for multiplication. See mulrid 11133 for commuted version. (Contributed by NM, 8-Oct-1999.) |
| Ref | Expression |
|---|---|
| mullid | ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 11087 | . . 3 ⊢ 1 ∈ ℂ | |
| 2 | mulcom 11115 | . . 3 ⊢ ((1 ∈ ℂ ∧ 𝐴 ∈ ℂ) → (1 · 𝐴) = (𝐴 · 1)) | |
| 3 | 1, 2 | mpan 691 | . 2 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = (𝐴 · 1)) |
| 4 | mulrid 11133 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴 · 1) = 𝐴) | |
| 5 | 3, 4 | eqtrd 2772 | 1 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 (class class class)co 7360 ℂcc 11027 1c1 11030 · cmul 11034 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-ext 2709 ax-resscn 11086 ax-1cn 11087 ax-icn 11088 ax-addcl 11089 ax-mulcl 11091 ax-mulcom 11093 ax-mulass 11095 ax-distr 11096 ax-1rid 11099 ax-cnre 11102 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-sb 2069 df-clab 2716 df-cleq 2729 df-clel 2812 df-rex 3063 df-rab 3391 df-v 3432 df-dif 3893 df-un 3895 df-ss 3907 df-nul 4275 df-if 4468 df-sn 4569 df-pr 4571 df-op 4575 df-uni 4852 df-br 5087 df-iota 6448 df-fv 6500 df-ov 7363 |
| This theorem is referenced by: mullidi 11141 mullidd 11154 muladd11 11307 1p1times 11308 mul02lem1 11313 cnegex2 11319 mulm1 11582 div1 11835 subdivcomb2 11842 recdiv 11852 divdiv2 11858 conjmul 11863 ser1const 14011 expp1 14021 recan 15290 arisum 15816 geo2sum 15829 prodrblem 15885 prodmolem2a 15890 risefac1 15989 fallfac1 15990 bpoly3 16014 bpoly4 16015 sinhval 16112 coshval 16113 demoivreALT 16159 gcdadd 16486 gcdid 16487 cncrng 21378 cncrngOLD 21379 cnfld1 21383 cnfld1OLD 21384 blcvx 24773 icccvx 24927 cnlmod 25117 coeidp 26238 dgrid 26239 quartlem1 26834 asinsinlem 26868 asinsin 26869 atantan 26900 musumsum 27169 brbtwn2 28988 axsegconlem1 29000 ax5seglem1 29011 ax5seglem2 29012 ax5seglem4 29015 ax5seglem5 29016 axeuclid 29046 axcontlem2 29048 axcontlem4 29050 cncvcOLD 30669 dvcosax 46372 sin3t 47335 cos3t 47336 sin5tlem4 47340 |
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