Theorem grppropstrg 13601

Description: Generalize a specific 2-element group L to show that any set K with the same (relevant) properties is also a group. (Contributed by NM, 28-Oct-2012.) (Revised by Mario Carneiro, 6-Jan-2015.)

Hypotheses

Ref	Expression
grppropstr.b	|- ( Base ` K ) = B
grppropstr.p	|- ( +g ` K ) = .+
grppropstr.l	|- L = { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , .+ >. }

Assertion

Ref	Expression
grppropstrg	|- ( K e. V -> ( K e. Grp <-> L e. Grp ) )

Proof of Theorem grppropstrg

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

Step	Hyp	Ref	Expression
1		grppropstr.b	. . . . 5 |- ( Base ` K ) = B
2		basfn 13140	. . . . . 6 |- Base Fn _V
3		elex 2814	. . . . . 6 |- ( K e. V -> K e. _V )
4		funfvex 5656	. . . . . . 7 |- ( ( Fun Base /\ K e. dom Base ) -> ( Base ` K ) e. _V )
5	4	funfni 5432	. . . . . 6 |- ( ( Base Fn _V /\ K e. _V ) -> ( Base ` K ) e. _V )
6	2, 3, 5	sylancr 414	. . . . 5 |- ( K e. V -> ( Base ` K ) e. _V )
7	1, 6	eqeltrrid 2319	. . . 4 |- ( K e. V -> B e. _V )
8		grppropstr.p	. . . . 5 |- ( +g ` K ) = .+
9		plusgslid 13194	. . . . . 6 |- ( +g = Slot ( +g ` ndx ) /\ ( +g ` ndx ) e. NN )
10	9	slotex 13108	. . . . 5 |- ( K e. V -> ( +g ` K ) e. _V )
11	8, 10	eqeltrrid 2319	. . . 4 |- ( K e. V -> .+ e. _V )
12		grppropstr.l	. . . . 5 |- L = { <. ( Base ` ndx ) , B >. , <. ( +g ` ndx ) , .+ >. }
13	12	grpbaseg 13209	. . . 4 |- ( ( B e. _V /\ .+ e. _V ) -> B = ( Base ` L ) )
14	7, 11, 13	syl2anc 411	. . 3 |- ( K e. V -> B = ( Base ` L ) )
15	1, 14	eqtrid 2276	. . 3 |- ( K e. V -> ( Base ` K ) = ( Base ` L ) )
16	14, 15	eqtr4d 2267	. 2 |- ( K e. V -> B = ( Base ` K ) )
17	12	grpplusgg 13210	. . . . 5 |- ( ( B e. _V /\ .+ e. _V ) -> .+ = ( +g ` L ) )
18	7, 11, 17	syl2anc 411	. . . 4 |- ( K e. V -> .+ = ( +g ` L ) )
19	8, 18	eqtrid 2276	. . 3 |- ( K e. V -> ( +g ` K ) = ( +g ` L ) )
20	19	oveqdr 6045	. 2 |- ( ( K e. V /\ ( x e. B /\ y e. B ) ) -> ( x ( +g ` K ) y ) = ( x ( +g ` L ) y ) )
21	16, 14, 20	grppropd 13599	1 |- ( K e. V -> ( K e. Grp <-> L e. Grp ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1397   e. wcel 2202   _Vcvv 2802   {cpr 3670   <.cop 3672   Fn wfn 5321   ` cfv 5326   ndxcnx 13078   Basecbs 13081   +g cplusg 13159   Grpcgrp 13582

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-in1 619  ax-in2 620  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-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-cnex 8122  ax-resscn 8123  ax-1cn 8124  ax-1re 8125  ax-icn 8126  ax-addcl 8127  ax-addrcl 8128  ax-mulcl 8129  ax-addcom 8131  ax-addass 8133  ax-i2m1 8136  ax-0lt1 8137  ax-0id 8139  ax-rnegex 8140  ax-pre-ltirr 8143  ax-pre-ltadd 8147

This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ne 2403  df-nel 2498  df-ral 2515  df-rex 2516  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-nul 3495  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-iota 5286  df-fun 5328  df-fn 5329  df-fv 5334  df-riota 5970  df-ov 6020  df-pnf 8215  df-mnf 8216  df-ltxr 8218  df-inn 9143  df-2 9201  df-ndx 13084  df-slot 13085  df-base 13087  df-plusg 13172  df-0g 13340  df-mgm 13438  df-sgrp 13484  df-mnd 13499  df-grp 13585

This theorem is referenced by:  ring1  14071