Theorem cmnmnd 14018

Description: A commutative monoid is a monoid. (Contributed by Mario Carneiro, 6-Jan-2015.)

Assertion

Ref	Expression
cmnmnd	|- ( G e. CMnd -> G e. Mnd )

Proof of Theorem cmnmnd

Dummy variables x y are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		eqid 2232	. . 3 |- ( Base ` G ) = ( Base ` G )
2		eqid 2232	. . 3 |- ( +g ` G ) = ( +g ` G )
3	1, 2	iscmn 14010	. 2 |- ( G e. CMnd <-> ( G e. Mnd /\ A. x e. ( Base ` G ) A. y e. ( Base ` G ) ( x ( +g ` G ) y ) = ( y ( +g ` G ) x ) ) )
4	3	simplbi 274	1 |- ( G e. CMnd -> G e. Mnd )

Syntax hints:   -> wi 4   = wceq 1398   e. wcel 2203   A.wral 2520   ` cfv 5352  (class class class)co 6050   Basecbs 13212   +g cplusg 13290   Mndcmnd 13629  CMndccmn 14001

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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2214

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ral 2525  df-rex 2526  df-rab 2529  df-v 2815  df-un 3215  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-br 4110  df-iota 5312  df-fv 5360  df-ov 6053  df-cmn 14003

This theorem is referenced by:  cmn32  14021  cmn4  14022  cmn12  14023  cmnmndd  14025  rinvmod  14026  ghmcmn  14044  srgmnd  14111  gfsumz  16869