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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 8151 | . 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 1395 ∈ wcel 2200 (class class class)co 6007 ℂcc 8005 1c1 8008 · cmul 8012 |
| 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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-ext 2211 ax-resscn 8099 ax-1cn 8100 ax-icn 8102 ax-addcl 8103 ax-mulcl 8105 ax-mulcom 8108 ax-mulass 8110 ax-distr 8111 ax-1rid 8114 ax-cnre 8118 |
| This theorem depends on definitions: df-bi 117 df-3an 1004 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-sn 3672 df-pr 3673 df-op 3675 df-uni 3889 df-br 4084 df-iota 5278 df-fv 5326 df-ov 6010 |
| This theorem is referenced by: rimul 8740 muleqadd 8823 1t1e1 9271 2t1e2 9272 3t1e3 9274 halfpm6th 9339 iap0 9342 9p1e10 9588 numltc 9611 numsucc 9625 dec10p 9628 numadd 9632 numaddc 9633 11multnc 9653 4t3lem 9682 5t2e10 9685 9t11e99 9715 rei 11418 imi 11419 cji 11421 0.999... 12040 efival 12251 ef01bndlem 12275 5ndvds6 12454 3lcm2e6 12690 decsplit0b 12957 2exp8 12966 dveflem 15408 efhalfpi 15481 |
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