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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 8176 | . 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 1397 ∈ wcel 2202 (class class class)co 6018 ℂcc 8030 1c1 8033 · cmul 8037 |
| 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 716 ax-5 1495 ax-7 1496 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-10 1553 ax-11 1554 ax-i12 1555 ax-bndl 1557 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 ax-i5r 1583 ax-ext 2213 ax-resscn 8124 ax-1cn 8125 ax-icn 8127 ax-addcl 8128 ax-mulcl 8130 ax-mulcom 8133 ax-mulass 8135 ax-distr 8136 ax-1rid 8139 ax-cnre 8143 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 df-tru 1400 df-nf 1509 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2363 df-ral 2515 df-rex 2516 df-v 2804 df-un 3204 df-in 3206 df-ss 3213 df-sn 3675 df-pr 3676 df-op 3678 df-uni 3894 df-br 4089 df-iota 5286 df-fv 5334 df-ov 6021 |
| This theorem is referenced by: rimul 8765 muleqadd 8848 1t1e1 9296 2t1e2 9297 3t1e3 9299 halfpm6th 9364 iap0 9367 9p1e10 9613 numltc 9636 numsucc 9650 dec10p 9653 numadd 9657 numaddc 9658 11multnc 9678 4t3lem 9707 5t2e10 9710 9t11e99 9740 rei 11461 imi 11462 cji 11464 0.999... 12084 efival 12295 ef01bndlem 12319 5ndvds6 12498 3lcm2e6 12734 decsplit0b 13001 2exp8 13010 dveflem 15453 efhalfpi 15526 |
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