Theorem frgpuptinv 16916

Description: Any assignment of the generators to target elements can be extended (uniquely) to a homomorphism from a free monoid to an arbitrary other monoid. (Contributed by Mario Carneiro, 2-Oct-2015.)

Hypotheses

Ref	Expression
frgpup.b	|- B = ( Base ` H )
frgpup.n	|- N = ( invg ` H )
frgpup.t	|- T = ( y e. I , z e. 2o |-> if ( z = (/) , ( F ` y ) , ( N ` ( F ` y ) ) ) )
frgpup.h	|- ( ph -> H e. Grp )
frgpup.i	|- ( ph -> I e. V )
frgpup.a	|- ( ph -> F : I --> B )
frgpuptinv.m	|- M = ( y e. I , z e. 2o |-> <. y , ( 1o \ z ) >. )

Assertion

Ref	Expression
frgpuptinv	|- ( ( ph /\ A e. ( I X. 2o ) ) -> ( T ` ( M ` A ) ) = ( N ` ( T ` A ) ) )

Distinct variable groups:   y, z, A   y, F, z   y, N, z   y, B, z   ph, y, z   y, I, z

Allowed substitution hints:   T( y, z)   H( y, z)   M( y, z)   V( y, z)

Proof of Theorem frgpuptinv

Dummy variables a b are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		elxp2 5026	. . 3 |- ( A e. ( I X. 2o ) <-> E. a e. I E. b e. 2o A = <. a , b >. )
2		frgpuptinv.m	. . . . . . . . . 10 |- M = ( y e. I , z e. 2o |-> <. y , ( 1o \ z ) >. )
3	2	efgmval 16857	. . . . . . . . 9 |- ( ( a e. I /\ b e. 2o ) -> ( a M b ) = <. a , ( 1o \ b ) >. )
4	3	adantl 466	. . . . . . . 8 |- ( ( ph /\ ( a e. I /\ b e. 2o ) ) -> ( a M b ) = <. a , ( 1o \ b ) >. )
5	4	fveq2d 5876	. . . . . . 7 |- ( ( ph /\ ( a e. I /\ b e. 2o ) ) -> ( T ` ( a M b ) ) = ( T ` <. a , ( 1o \ b ) >. ) )
6		df-ov 6299	. . . . . . 7 |- ( a T ( 1o \ b ) ) = ( T ` <. a , ( 1o \ b ) >. )
7	5, 6	syl6eqr 2516	. . . . . 6 |- ( ( ph /\ ( a e. I /\ b e. 2o ) ) -> ( T ` ( a M b ) ) = ( a T ( 1o \ b ) ) )
8		elpri 4052	. . . . . . . . 9 |- ( b e. { (/) , 1o } -> ( b = (/) \/ b = 1o ) )
9		df2o3 7161	. . . . . . . . 9 |- 2o = { (/) , 1o }
10	8, 9	eleq2s 2565	. . . . . . . 8 |- ( b e. 2o -> ( b = (/) \/ b = 1o ) )
11		simpr 461	. . . . . . . . . . . 12 |- ( ( ph /\ a e. I ) -> a e. I )
12		1on 7155	. . . . . . . . . . . . . . 15 |- 1o e. On
13	12	elexi 3119	. . . . . . . . . . . . . 14 |- 1o e. _V
14	13	prid2 4141	. . . . . . . . . . . . 13 |- 1o e. { (/) , 1o }
15	14, 9	eleqtrri 2544	. . . . . . . . . . . 12 |- 1o e. 2o
16		1n0 7163	. . . . . . . . . . . . . . . 16 |- 1o =/= (/)
17		neeq1 2738	. . . . . . . . . . . . . . . 16 |- ( z = 1o -> ( z =/= (/) <-> 1o =/= (/) ) )
18	16, 17	mpbiri 233	. . . . . . . . . . . . . . 15 |- ( z = 1o -> z =/= (/) )
19		ifnefalse 3956	. . . . . . . . . . . . . . 15 |- ( z =/= (/) -> if ( z = (/) , ( F ` y ) , ( N ` ( F ` y ) ) ) = ( N ` ( F ` y ) ) )
20	18, 19	syl 16	. . . . . . . . . . . . . 14 |- ( z = 1o -> if ( z = (/) , ( F ` y ) , ( N ` ( F ` y ) ) ) = ( N ` ( F ` y ) ) )
21		fveq2 5872	. . . . . . . . . . . . . . 15 |- ( y = a -> ( F ` y ) = ( F ` a ) )
22	21	fveq2d 5876	. . . . . . . . . . . . . 14 |- ( y = a -> ( N ` ( F ` y ) ) = ( N ` ( F ` a ) ) )
23	20, 22	sylan9eqr 2520	. . . . . . . . . . . . 13 |- ( ( y = a /\ z = 1o ) -> if ( z = (/) , ( F ` y ) , ( N ` ( F ` y ) ) ) = ( N ` ( F ` a ) ) )
24		frgpup.t	. . . . . . . . . . . . 13 |- T = ( y e. I , z e. 2o |-> if ( z = (/) , ( F ` y ) , ( N ` ( F ` y ) ) ) )
25		fvex 5882	. . . . . . . . . . . . 13 |- ( N ` ( F ` a ) ) e. _V
26	23, 24, 25	ovmpt2a 6432	. . . . . . . . . . . 12 |- ( ( a e. I /\ 1o e. 2o ) -> ( a T 1o ) = ( N ` ( F ` a ) ) )
27	11, 15, 26	sylancl 662	. . . . . . . . . . 11 |- ( ( ph /\ a e. I ) -> ( a T 1o ) = ( N ` ( F ` a ) ) )
28		0ex 4587	. . . . . . . . . . . . . . 15 |- (/) e. _V
29	28	prid1 4140	. . . . . . . . . . . . . 14 |- (/) e. { (/) , 1o }
30	29, 9	eleqtrri 2544	. . . . . . . . . . . . 13 |- (/) e. 2o
31		iftrue 3950	. . . . . . . . . . . . . . 15 |- ( z = (/) -> if ( z = (/) , ( F ` y ) , ( N ` ( F ` y ) ) ) = ( F ` y ) )
32	31, 21	sylan9eqr 2520	. . . . . . . . . . . . . 14 |- ( ( y = a /\ z = (/) ) -> if ( z = (/) , ( F ` y ) , ( N ` ( F ` y ) ) ) = ( F ` a ) )
33		fvex 5882	. . . . . . . . . . . . . 14 |- ( F ` a ) e. _V
34	32, 24, 33	ovmpt2a 6432	. . . . . . . . . . . . 13 |- ( ( a e. I /\ (/) e. 2o ) -> ( a T (/) ) = ( F ` a ) )
35	11, 30, 34	sylancl 662	. . . . . . . . . . . 12 |- ( ( ph /\ a e. I ) -> ( a T (/) ) = ( F ` a ) )
36	35	fveq2d 5876	. . . . . . . . . . 11 |- ( ( ph /\ a e. I ) -> ( N ` ( a T (/) ) ) = ( N ` ( F ` a ) ) )
37	27, 36	eqtr4d 2501	. . . . . . . . . 10 |- ( ( ph /\ a e. I ) -> ( a T 1o ) = ( N ` ( a T (/) ) ) )
38		difeq2 3612	. . . . . . . . . . . . 13 |- ( b = (/) -> ( 1o \ b ) = ( 1o \ (/) ) )
39		dif0 3901	. . . . . . . . . . . . 13 |- ( 1o \ (/) ) = 1o
40	38, 39	syl6eq 2514	. . . . . . . . . . . 12 |- ( b = (/) -> ( 1o \ b ) = 1o )
41	40	oveq2d 6312	. . . . . . . . . . 11 |- ( b = (/) -> ( a T ( 1o \ b ) ) = ( a T 1o ) )
42		oveq2 6304	. . . . . . . . . . . 12 |- ( b = (/) -> ( a T b ) = ( a T (/) ) )
43	42	fveq2d 5876	. . . . . . . . . . 11 |- ( b = (/) -> ( N ` ( a T b ) ) = ( N ` ( a T (/) ) ) )
44	41, 43	eqeq12d 2479	. . . . . . . . . 10 |- ( b = (/) -> ( ( a T ( 1o \ b ) ) = ( N ` ( a T b ) ) <-> ( a T 1o ) = ( N ` ( a T (/) ) ) ) )
45	37, 44	syl5ibrcom 222	. . . . . . . . 9 |- ( ( ph /\ a e. I ) -> ( b = (/) -> ( a T ( 1o \ b ) ) = ( N ` ( a T b ) ) ) )
46	37	fveq2d 5876	. . . . . . . . . . 11 |- ( ( ph /\ a e. I ) -> ( N ` ( a T 1o ) ) = ( N ` ( N ` ( a T (/) ) ) ) )
47		frgpup.h	. . . . . . . . . . . . 13 |- ( ph -> H e. Grp )
48	47	adantr 465	. . . . . . . . . . . 12 |- ( ( ph /\ a e. I ) -> H e. Grp )
49		frgpup.a	. . . . . . . . . . . . . 14 |- ( ph -> F : I --> B )
50	49	ffvelrnda 6032	. . . . . . . . . . . . 13 |- ( ( ph /\ a e. I ) -> ( F ` a ) e. B )
51	35, 50	eqeltrd 2545	. . . . . . . . . . . 12 |- ( ( ph /\ a e. I ) -> ( a T (/) ) e. B )
52		frgpup.b	. . . . . . . . . . . . 13 |- B = ( Base ` H )
53		frgpup.n	. . . . . . . . . . . . 13 |- N = ( invg ` H )
54	52, 53	grpinvinv 16232	. . . . . . . . . . . 12 |- ( ( H e. Grp /\ ( a T (/) ) e. B ) -> ( N ` ( N ` ( a T (/) ) ) ) = ( a T (/) ) )
55	48, 51, 54	syl2anc 661	. . . . . . . . . . 11 |- ( ( ph /\ a e. I ) -> ( N ` ( N ` ( a T (/) ) ) ) = ( a T (/) ) )
56	46, 55	eqtr2d 2499	. . . . . . . . . 10 |- ( ( ph /\ a e. I ) -> ( a T (/) ) = ( N ` ( a T 1o ) ) )
57		difeq2 3612	. . . . . . . . . . . . 13 |- ( b = 1o -> ( 1o \ b ) = ( 1o \ 1o ) )
58		difid 3899	. . . . . . . . . . . . 13 |- ( 1o \ 1o ) = (/)
59	57, 58	syl6eq 2514	. . . . . . . . . . . 12 |- ( b = 1o -> ( 1o \ b ) = (/) )
60	59	oveq2d 6312	. . . . . . . . . . 11 |- ( b = 1o -> ( a T ( 1o \ b ) ) = ( a T (/) ) )
61		oveq2 6304	. . . . . . . . . . . 12 |- ( b = 1o -> ( a T b ) = ( a T 1o ) )
62	61	fveq2d 5876	. . . . . . . . . . 11 |- ( b = 1o -> ( N ` ( a T b ) ) = ( N ` ( a T 1o ) ) )
63	60, 62	eqeq12d 2479	. . . . . . . . . 10 |- ( b = 1o -> ( ( a T ( 1o \ b ) ) = ( N ` ( a T b ) ) <-> ( a T (/) ) = ( N ` ( a T 1o ) ) ) )
64	56, 63	syl5ibrcom 222	. . . . . . . . 9 |- ( ( ph /\ a e. I ) -> ( b = 1o -> ( a T ( 1o \ b ) ) = ( N ` ( a T b ) ) ) )
65	45, 64	jaod 380	. . . . . . . 8 |- ( ( ph /\ a e. I ) -> ( ( b = (/) \/ b = 1o ) -> ( a T ( 1o \ b ) ) = ( N ` ( a T b ) ) ) )
66	10, 65	syl5 32	. . . . . . 7 |- ( ( ph /\ a e. I ) -> ( b e. 2o -> ( a T ( 1o \ b ) ) = ( N ` ( a T b ) ) ) )
67	66	impr 619	. . . . . 6 |- ( ( ph /\ ( a e. I /\ b e. 2o ) ) -> ( a T ( 1o \ b ) ) = ( N ` ( a T b ) ) )
68	7, 67	eqtrd 2498	. . . . 5 |- ( ( ph /\ ( a e. I /\ b e. 2o ) ) -> ( T ` ( a M b ) ) = ( N ` ( a T b ) ) )
69		fveq2 5872	. . . . . . . 8 |- ( A = <. a , b >. -> ( M ` A ) = ( M ` <. a , b >. ) )
70		df-ov 6299	. . . . . . . 8 |- ( a M b ) = ( M ` <. a , b >. )
71	69, 70	syl6eqr 2516	. . . . . . 7 |- ( A = <. a , b >. -> ( M ` A ) = ( a M b ) )
72	71	fveq2d 5876	. . . . . 6 |- ( A = <. a , b >. -> ( T ` ( M ` A ) ) = ( T ` ( a M b ) ) )
73		fveq2 5872	. . . . . . . 8 |- ( A = <. a , b >. -> ( T ` A ) = ( T ` <. a , b >. ) )
74		df-ov 6299	. . . . . . . 8 |- ( a T b ) = ( T ` <. a , b >. )
75	73, 74	syl6eqr 2516	. . . . . . 7 |- ( A = <. a , b >. -> ( T ` A ) = ( a T b ) )
76	75	fveq2d 5876	. . . . . 6 |- ( A = <. a , b >. -> ( N ` ( T ` A ) ) = ( N ` ( a T b ) ) )
77	72, 76	eqeq12d 2479	. . . . 5 |- ( A = <. a , b >. -> ( ( T ` ( M ` A ) ) = ( N ` ( T ` A ) ) <-> ( T ` ( a M b ) ) = ( N ` ( a T b ) ) ) )
78	68, 77	syl5ibrcom 222	. . . 4 |- ( ( ph /\ ( a e. I /\ b e. 2o ) ) -> ( A = <. a , b >. -> ( T ` ( M ` A ) ) = ( N ` ( T ` A ) ) ) )
79	78	rexlimdvva 2956	. . 3 |- ( ph -> ( E. a e. I E. b e. 2o A = <. a , b >. -> ( T ` ( M ` A ) ) = ( N ` ( T ` A ) ) ) )
80	1, 79	syl5bi 217	. 2 |- ( ph -> ( A e. ( I X. 2o ) -> ( T ` ( M ` A ) ) = ( N ` ( T ` A ) ) ) )
81	80	imp 429	1 |- ( ( ph /\ A e. ( I X. 2o ) ) -> ( T ` ( M ` A ) ) = ( N ` ( T ` A ) ) )

Syntax hints:   -> wi 4   \/ wo 368   /\ wa 369   = wceq 1395   e. wcel 1819   =/= wne 2652   E.wrex 2808   \ cdif 3468   (/)c0 3793   ifcif 3944   {cpr 4034   <.cop 4038   Oncon0 4887   X. cxp 5006   -->wf 5590   ` cfv 5594  (class class class)co 6296   |-> cmpt2 6298   1oc1o 7141   2oc2o 7142   Basecbs 14644   Grpcgrp 16180   invgcminusg 16181

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1619  ax-4 1632  ax-5 1705  ax-6 1748  ax-7 1791  ax-8 1821  ax-9 1823  ax-10 1838  ax-11 1843  ax-12 1855  ax-13 2000  ax-ext 2435  ax-rep 4568  ax-sep 4578  ax-nul 4586  ax-pow 4634  ax-pr 4695  ax-un 6591

This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-3or 974  df-3an 975  df-tru 1398  df-ex 1614  df-nf 1618  df-sb 1741  df-eu 2287  df-mo 2288  df-clab 2443  df-cleq 2449  df-clel 2452  df-nfc 2607  df-ne 2654  df-ral 2812  df-rex 2813  df-reu 2814  df-rmo 2815  df-rab 2816  df-v 3111  df-sbc 3328  df-csb 3431  df-dif 3474  df-un 3476  df-in 3478  df-ss 3485  df-pss 3487  df-nul 3794  df-if 3945  df-pw 4017  df-sn 4033  df-pr 4035  df-tp 4037  df-op 4039  df-uni 4252  df-iun 4334  df-br 4457  df-opab 4516  df-mpt 4517  df-tr 4551  df-eprel 4800  df-id 4804  df-po 4809  df-so 4810  df-fr 4847  df-we 4849  df-ord 4890  df-on 4891  df-suc 4893  df-xp 5014  df-rel 5015  df-cnv 5016  df-co 5017  df-dm 5018  df-rn 5019  df-res 5020  df-ima 5021  df-iota 5557  df-fun 5596  df-fn 5597  df-f 5598  df-f1 5599  df-fo 5600  df-f1o 5601  df-fv 5602  df-riota 6258  df-ov 6299  df-oprab 6300  df-mpt2 6301  df-1o 7148  df-2o 7149  df-0g 14859  df-mgm 15999  df-sgrp 16038  df-mnd 16048  df-grp 16184  df-minusg 16185

This theorem is referenced by:  frgpuplem  16917