Theorem isabli 13886

Description: Properties that determine an Abelian group. (Contributed by NM, 4-Sep-2011.)

Hypotheses

Ref	Expression
isabli.g	|- G e. Grp
isabli.b	|- B = ( Base ` G )
isabli.p	|- .+ = ( +g ` G )
isabli.c	|- ( ( x e. B /\ y e. B ) -> ( x .+ y ) = ( y .+ x ) )

Assertion

Ref	Expression
isabli	|- G e. Abel

Distinct variable groups:   x, y, B   x, G, y

Allowed substitution hints:   .+ ( x, y)

Proof of Theorem isabli

Step	Hyp	Ref	Expression
1		isabli.g	. 2 |- G e. Grp
2		isabli.c	. . 3 |- ( ( x e. B /\ y e. B ) -> ( x .+ y ) = ( y .+ x ) )
3	2	rgen2 2618	. 2 |- A. x e. B A. y e. B ( x .+ y ) = ( y .+ x )
4		isabli.b	. . 3 |- B = ( Base ` G )
5		isabli.p	. . 3 |- .+ = ( +g ` G )
6	4, 5	isabl2 13880	. 2 |- ( G e. Abel <-> ( G e. Grp /\ A. x e. B A. y e. B ( x .+ y ) = ( y .+ x ) ) )
7	1, 3, 6	mpbir2an 950	1 |- G e. Abel

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1397   e. wcel 2202   A.wral 2510   ` cfv 5326  (class class class)co 6017   Basecbs 13081   +g cplusg 13159   Grpcgrp 13582   Abelcabl 13871

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 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-ext 2213

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ral 2515  df-rex 2516  df-rab 2519  df-v 2804  df-un 3204  df-in 3206  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-br 4089  df-iota 5286  df-fv 5334  df-ov 6020  df-grp 13585  df-cmn 13872  df-abl 13873

This theorem is referenced by: (None)