Theorem abl32 14110

Description: Commutative/associative law for Abelian groups. (Contributed by Stefan O'Rear, 10-Apr-2015.) (Revised by Mario Carneiro, 21-Apr-2016.)

Hypotheses

Ref	Expression
ablcom.b	|- B = ( Base ` G )
ablcom.p	|- .+ = ( +g ` G )
abl32.g	|- ( ph -> G e. Abel )
abl32.x	|- ( ph -> X e. B )
abl32.y	|- ( ph -> Y e. B )
abl32.z	|- ( ph -> Z e. B )

Assertion

Ref	Expression
abl32	|- ( ph -> ( ( X .+ Y ) .+ Z ) = ( ( X .+ Z ) .+ Y ) )

Proof of Theorem abl32

Step	Hyp	Ref	Expression
1		abl32.g	. . 3 |- ( ph -> G e. Abel )
2		ablcmn 14094	. . 3 |- ( G e. Abel -> G e. CMnd )
3	1, 2	syl 14	. 2 |- ( ph -> G e. CMnd )
4		abl32.x	. 2 |- ( ph -> X e. B )
5		abl32.y	. 2 |- ( ph -> Y e. B )
6		abl32.z	. 2 |- ( ph -> Z e. B )
7		ablcom.b	. . 3 |- B = ( Base ` G )
8		ablcom.p	. . 3 |- .+ = ( +g ` G )
9	7, 8	cmn32 14107	. 2 |- ( ( G e. CMnd /\ ( X e. B /\ Y e. B /\ Z e. B ) ) -> ( ( X .+ Y ) .+ Z ) = ( ( X .+ Z ) .+ Y ) )
10	3, 4, 5, 6, 9	syl13anc 1280	1 |- ( ph -> ( ( X .+ Y ) .+ Z ) = ( ( X .+ Z ) .+ Y ) )

This proof depends on syntax axioms:   -> wi 4   = wceq 1402   e. wcel 2209   ` cfv 5377  (class class class)co 6085   Basecbs 13352   +g cplusg 13431  CMndccmn 14087   Abelcabl 14088

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-14 2212  ax-ext 2220  ax-sep 4249  ax-pow 4311  ax-pr 4346  ax-un 4578  ax-cnex 8270  ax-resscn 8271  ax-1re 8273  ax-addrcl 8276

This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-eu 2089  df-mo 2090  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-sbc 3052  df-un 3224  df-in 3226  df-ss 3233  df-pw 3690  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-int 3971  df-br 4131  df-opab 4193  df-mpt 4194  df-id 4438  df-xp 4780  df-rel 4781  df-cnv 4782  df-co 4783  df-dm 4784  df-rn 4785  df-res 4786  df-iota 5337  df-fun 5379  df-fn 5380  df-fv 5385  df-ov 6088  df-inn 9305  df-2 9363  df-ndx 13355  df-slot 13356  df-base 13358  df-plusg 13444  df-sgrp 13717  df-mnd 13730  df-cmn 14089  df-abl 14090

This theorem is used by: (None)