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| Mirrors > Home > ILE Home > Th. List > mulridi | GIF version | ||
| Description: Identity law for multiplication. (Contributed by NM, 14-Feb-1995.) |
| Ref | Expression |
|---|---|
| axi.1 | ⊢ 𝐴 ∈ ℂ |
| Ref | Expression |
|---|---|
| mulridi | ⊢ (𝐴 · 1) = 𝐴 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | axi.1 | . 2 ⊢ 𝐴 ∈ ℂ | |
| 2 | mulrid 8323 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴 · 1) = 𝐴) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ (𝐴 · 1) = 𝐴 |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: = wceq 1402 ∈ wcel 2209 (class class class)co 6085 ℂcc 8177 1c1 8180 · cmul 8184 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-ext 2220 ax-resscn 8271 ax-1cn 8272 ax-icn 8274 ax-addcl 8275 ax-mulcl 8277 ax-mulcom 8280 ax-mulass 8282 ax-distr 8283 ax-1rid 8286 ax-cnre 8290 |
| This proof depends on definitions: df-bi 117 df-3an 1011 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-iota 5337 df-fv 5385 df-ov 6088 |
| This theorem is used by: rimul 8914 muleqadd 8999 1t1e1 9458 2t1e2 9459 3t1e3 9461 halfpm6th 9527 iap0 9530 9p1e10 9781 numltc 9804 numsucc 9818 dec10p 9821 numadd 9825 numaddc 9826 11multnc 9846 4t3lem 9875 5t2e10 9878 9t11e99 9908 rei 11667 imi 11668 cji 11670 0.999... 12290 efival 12501 ef01bndlem 12525 5ndvds6 12704 3lcm2e6 12940 decsplit0b 13207 2exp8 13216 dveflem 15829 efhalfpi 15903 log2ublem3 16091 log2ublog2 16092 birthdaylog2 16096 |
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