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| Mirrors > Home > MPE Home > Th. List > mullid | Structured version Visualization version GIF version | ||
| Description: Identity law for multiplication. See mulrid 11194 for commuted version. (Contributed by NM, 8-Oct-1999.) |
| Ref | Expression |
|---|---|
| mullid | ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 11146 | . . 3 ⊢ 1 ∈ ℂ | |
| 2 | mulcom 11174 | . . 3 ⊢ ((1 ∈ ℂ ∧ 𝐴 ∈ ℂ) → (1 · 𝐴) = (𝐴 · 1)) | |
| 3 | 1, 2 | mpan 702 | . 2 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = (𝐴 · 1)) |
| 4 | mulrid 11194 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴 · 1) = 𝐴) | |
| 5 | 3, 4 | eqtrd 2800 | 1 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1563 ∈ wcel 2145 (class class class)co 7400 ℂcc 11086 1c1 11089 · cmul 11093 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-ext 2737 ax-resscn 11145 ax-1cn 11146 ax-icn 11147 ax-addcl 11148 ax-mulcl 11150 ax-mulcom 11152 ax-mulass 11154 ax-distr 11155 ax-1rid 11158 ax-cnre 11161 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-sb 2094 df-clab 2744 df-cleq 2757 df-clel 2840 df-rex 3090 df-rab 3418 df-v 3459 df-dif 3910 df-un 3912 df-ss 3924 df-nul 4289 df-if 4484 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4869 df-br 5106 df-iota 6481 df-fv 6533 df-ov 7403 |
| This theorem is referenced by: mullidi 11202 mullidd 11215 muladd11 11368 1p1times 11369 mul02lem1 11374 cnegex2 11380 mulm1 11643 div1 11895 subdivcomb2 11902 recdiv 11912 divdiv2 11918 conjmul 11923 ser1const 14085 expp1 14095 recan 15378 arisum 15904 geo2sum 15917 prodrblem 15973 prodmolem2a 15978 risefac1 16077 fallfac1 16078 bpoly3 16102 bpoly4 16103 sinhval 16200 coshval 16201 demoivreALT 16247 gcdadd 16574 gcdid 16575 cncrng 21503 cnfld1 21507 blcvx 24916 icccvx 25070 cnlmod 25260 coeidp 26381 dgrid 26382 quartlem1 26980 asinsinlem 27014 asinsin 27015 atantan 27046 musumsum 27314 brbtwn2 29164 axsegconlem1 29176 ax5seglem1 29187 ax5seglem2 29188 ax5seglem4 29191 ax5seglem5 29192 axeuclid 29222 axcontlem2 29224 axcontlem4 29226 cncvcOLD 30844 dvcosax 46498 sin3t 47463 cos3t 47464 sin5tlem4 47468 |
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