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| Mirrors > Home > MPE Home > Th. List > mullid | Structured version Visualization version GIF version | ||
| Description: Identity law for multiplication. See mulrid 11176 for commuted version. (Contributed by NM, 8-Oct-1999.) |
| Ref | Expression |
|---|---|
| mullid | ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | ax-1cn 11128 | . . 3 ⊢ 1 ∈ ℂ | |
| 2 | mulcom 11156 | . . 3 ⊢ ((1 ∈ ℂ ∧ 𝐴 ∈ ℂ) → (1 · 𝐴) = (𝐴 · 1)) | |
| 3 | 1, 2 | mpan 700 | . 2 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = (𝐴 · 1)) |
| 4 | mulrid 11176 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴 · 1) = 𝐴) | |
| 5 | 3, 4 | eqtrd 2796 | 1 ⊢ (𝐴 ∈ ℂ → (1 · 𝐴) = 𝐴) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 = wceq 1559 ∈ wcel 2141 (class class class)co 7392 ℂcc 11068 1c1 11071 · cmul 11075 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-ext 2733 ax-resscn 11127 ax-1cn 11128 ax-icn 11129 ax-addcl 11130 ax-mulcl 11132 ax-mulcom 11134 ax-mulass 11136 ax-distr 11137 ax-1rid 11140 ax-cnre 11143 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-sb 2090 df-clab 2740 df-cleq 2753 df-clel 2836 df-rex 3086 df-rab 3414 df-v 3455 df-dif 3907 df-un 3909 df-ss 3921 df-nul 4286 df-if 4480 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-br 5100 df-iota 6473 df-fv 6525 df-ov 7395 |
| This theorem is referenced by: mullidi 11184 mullidd 11197 muladd11 11350 1p1times 11351 mul02lem1 11356 cnegex2 11362 mulm1 11625 div1 11877 subdivcomb2 11884 recdiv 11894 divdiv2 11900 conjmul 11905 ser1const 14068 expp1 14078 recan 15347 arisum 15873 geo2sum 15886 prodrblem 15942 prodmolem2a 15947 risefac1 16046 fallfac1 16047 bpoly3 16071 bpoly4 16072 sinhval 16169 coshval 16170 demoivreALT 16216 gcdadd 16543 gcdid 16544 cncrng 21425 cnfld1 21429 blcvx 24838 icccvx 24992 cnlmod 25182 coeidp 26303 dgrid 26304 quartlem1 26899 asinsinlem 26933 asinsin 26934 atantan 26965 musumsum 27233 brbtwn2 29052 axsegconlem1 29064 ax5seglem1 29075 ax5seglem2 29076 ax5seglem4 29079 ax5seglem5 29080 axeuclid 29110 axcontlem2 29112 axcontlem4 29114 cncvcOLD 30732 dvcosax 46464 sin3t 47429 cos3t 47430 sin5tlem4 47434 |
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