ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  crngring GIF version

Theorem crngring 14418
Description: A commutative ring is a ring. (Contributed by Mario Carneiro, 7-Jan-2015.)
Assertion
Ref Expression
crngring (𝑅 ∈ CRing → 𝑅 ∈ Ring)

Proof of Theorem crngring
StepHypRef Expression
1 eqid 2238 . . 3 (mulGrp‘𝑅) = (mulGrp‘𝑅)
21iscrng 14413 . 2 (𝑅 ∈ CRing ↔ (𝑅 ∈ Ring ∧ (mulGrp‘𝑅) ∈ CMnd))
32simplbi 274 1 (𝑅 ∈ CRing → 𝑅 ∈ Ring)
Colors of variables:    wff set class
This proof depends on syntax axioms:   → wi 4   ∈ wcel 2209  ‘cfv 5380  CMndccmn 14176  mulGrpcmgp 14323  Ringcrg 14406  CRingccrg 14407
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 4132  df-iota 5340  df-fv 5388  df-cring 14409
This theorem is used by:  crngringd  14419  crngunit  14526  dvdsunit  14527  unitmulclb  14529  unitabl  14532  rmodislmod  14796  quscrng  14978  cnring  15015  zringring  15036  zring0  15043  znzrh2  15089  zndvds0  15093  znf1o  15094  znidom  15100  znunit  15102
  Copyright terms: Public domain W3C validator