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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 8317 | . 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 1402 ∈ wcel 2209 (class class class)co 6079 ℂcc 8171 1c1 8174 · cmul 8178 |
| 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 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 8265 ax-1cn 8266 ax-icn 8268 ax-addcl 8269 ax-mulcl 8271 ax-mulcom 8274 ax-mulass 8276 ax-distr 8277 ax-1rid 8280 ax-cnre 8284 |
| This theorem 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 3714 df-pr 3715 df-op 3717 df-uni 3934 df-br 4129 df-iota 5335 df-fv 5383 df-ov 6082 |
| This theorem is referenced by: rimul 8907 muleqadd 8992 1t1e1 9440 2t1e2 9441 3t1e3 9443 halfpm6th 9508 iap0 9511 9p1e10 9762 numltc 9785 numsucc 9799 dec10p 9802 numadd 9806 numaddc 9807 11multnc 9827 4t3lem 9856 5t2e10 9859 9t11e99 9889 rei 11648 imi 11649 cji 11651 0.999... 12271 efival 12482 ef01bndlem 12506 5ndvds6 12685 3lcm2e6 12921 decsplit0b 13188 2exp8 13197 dveflem 15810 efhalfpi 15883 log2ublem3 16068 log2ublog2 16069 birthdaylog2 16073 |
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