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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 8169 | . 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 6013 ℂcc 8023 1c1 8026 · cmul 8030 |
| 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 8117 ax-1cn 8118 ax-icn 8120 ax-addcl 8121 ax-mulcl 8123 ax-mulcom 8126 ax-mulass 8128 ax-distr 8129 ax-1rid 8132 ax-cnre 8136 |
| 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 2802 df-un 3202 df-in 3204 df-ss 3211 df-sn 3673 df-pr 3674 df-op 3676 df-uni 3892 df-br 4087 df-iota 5284 df-fv 5332 df-ov 6016 |
| This theorem is referenced by: rimul 8758 muleqadd 8841 1t1e1 9289 2t1e2 9290 3t1e3 9292 halfpm6th 9357 iap0 9360 9p1e10 9606 numltc 9629 numsucc 9643 dec10p 9646 numadd 9650 numaddc 9651 11multnc 9671 4t3lem 9700 5t2e10 9703 9t11e99 9733 rei 11453 imi 11454 cji 11456 0.999... 12075 efival 12286 ef01bndlem 12310 5ndvds6 12489 3lcm2e6 12725 decsplit0b 12992 2exp8 13001 dveflem 15443 efhalfpi 15516 |
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