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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 8276 | . 2 ⊢ (𝐴 ∈ ℂ → (𝐴 · 1) = 𝐴) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ (𝐴 · 1) = 𝐴 |
| Colors of variables: wff set class |
| Syntax hints: = wceq 1398 ∈ wcel 2205 (class class class)co 6052 ℂcc 8130 1c1 8133 · cmul 8137 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-ext 2216 ax-resscn 8224 ax-1cn 8225 ax-icn 8227 ax-addcl 8228 ax-mulcl 8230 ax-mulcom 8233 ax-mulass 8235 ax-distr 8236 ax-1rid 8239 ax-cnre 8243 |
| This theorem depends on definitions: df-bi 117 df-3an 1007 df-tru 1401 df-nf 1510 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ral 2527 df-rex 2528 df-v 2817 df-un 3217 df-in 3219 df-ss 3226 df-sn 3697 df-pr 3698 df-op 3700 df-uni 3917 df-br 4112 df-iota 5314 df-fv 5362 df-ov 6055 |
| This theorem is referenced by: rimul 8864 muleqadd 8947 1t1e1 9395 2t1e2 9396 3t1e3 9398 halfpm6th 9463 iap0 9466 9p1e10 9717 numltc 9740 numsucc 9754 dec10p 9757 numadd 9761 numaddc 9762 11multnc 9782 4t3lem 9811 5t2e10 9814 9t11e99 9844 rei 11592 imi 11593 cji 11595 0.999... 12215 efival 12426 ef01bndlem 12450 5ndvds6 12629 3lcm2e6 12865 decsplit0b 13132 2exp8 13141 dveflem 15640 efhalfpi 15713 |
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