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| Mirrors > Home > MPE Home > Th. List > mullid | Structured version Visualization version GIF version | ||
| Description: Identity law for multiplication. See mulrid 11142 for commuted version. (Contributed by NM, 8-Oct-1999.) |
| Ref | Expression |
|---|---|
| mullid | ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 11096 | . . 3 ⊢ 1 ∈ ℂ | |
| 2 | mulcom 11124 | . . 3 ⊢ ((1 ∈ ℂ ∧ 𝐴 ∈ ℂ) → (1 · 𝐴) = (𝐴 · 1)) | |
| 3 | 1, 2 | mpan 691 | . 2 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = (𝐴 · 1)) |
| 4 | mulrid 11142 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴 · 1) = 𝐴) | |
| 5 | 3, 4 | eqtrd 2771 | 1 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1542 ∈ wcel 2114 (class class class)co 7367 ℂcc 11036 1c1 11039 · cmul 11043 |
| 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 2708 ax-resscn 11095 ax-1cn 11096 ax-icn 11097 ax-addcl 11098 ax-mulcl 11100 ax-mulcom 11102 ax-mulass 11104 ax-distr 11105 ax-1rid 11108 ax-cnre 11111 |
| 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 2715 df-cleq 2728 df-clel 2811 df-rex 3062 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-ss 3906 df-nul 4274 df-if 4467 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-br 5086 df-iota 6454 df-fv 6506 df-ov 7370 |
| This theorem is referenced by: mullidi 11150 mullidd 11163 muladd11 11316 1p1times 11317 mul02lem1 11322 cnegex2 11328 mulm1 11591 div1 11844 subdivcomb2 11851 recdiv 11861 divdiv2 11867 conjmul 11872 ser1const 14020 expp1 14030 recan 15299 arisum 15825 geo2sum 15838 prodrblem 15894 prodmolem2a 15899 risefac1 15998 fallfac1 15999 bpoly3 16023 bpoly4 16024 sinhval 16121 coshval 16122 demoivreALT 16168 gcdadd 16495 gcdid 16496 cncrng 21373 cnfld1 21377 blcvx 24763 icccvx 24917 cnlmod 25107 coeidp 26228 dgrid 26229 quartlem1 26821 asinsinlem 26855 asinsin 26856 atantan 26887 musumsum 27155 brbtwn2 28974 axsegconlem1 28986 ax5seglem1 28997 ax5seglem2 28998 ax5seglem4 29001 ax5seglem5 29002 axeuclid 29032 axcontlem2 29034 axcontlem4 29036 cncvcOLD 30654 dvcosax 46354 sin3t 47319 cos3t 47320 sin5tlem4 47324 |
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