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| Mirrors > Home > ILE Home > Th. List > crngring | GIF version | ||
| Description: A commutative ring is a ring. (Contributed by Mario Carneiro, 7-Jan-2015.) |
| Ref | Expression |
|---|---|
| crngring | ⊢ (𝑅 ∈ CRing → 𝑅 ∈ Ring) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eqid 2238 | . . 3 ⊢ (mulGrp‘𝑅) = (mulGrp‘𝑅) | |
| 2 | 1 | iscrng 14356 | . 2 ⊢ (𝑅 ∈ CRing ↔ (𝑅 ∈ Ring ∧ (mulGrp‘𝑅) ∈ CMnd)) |
| 3 | 2 | simplbi 274 | 1 ⊢ (𝑅 ∈ CRing → 𝑅 ∈ Ring) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2209 ‘cfv 5377 CMndccmn 14136 mulGrpcmgp 14266 Ringcrg 14349 CRingccrg 14350 |
| This proof depends on 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 |
| This proof 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-rex 2534 df-rab 2537 df-v 2823 df-un 3224 df-sn 3715 df-pr 3716 df-op 3718 df-uni 3936 df-br 4131 df-iota 5337 df-fv 5385 df-cring 14352 |
| This theorem is used by: crngringd 14362 crngunit 14467 dvdsunit 14468 unitmulclb 14470 unitabl 14473 rmodislmod 14737 quscrng 14919 cnring 14956 zringring 14977 zring0 14984 znzrh2 15030 zndvds0 15034 znf1o 15035 znidom 15041 znunit 15043 |
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