Theorem iseqf1olemfvp 10771

Description: Lemma for seq3f1o 10778. (Contributed by Jim Kingdon, 30-Aug-2022.)

Hypotheses

Ref	Expression
iseqf1olemfvp.k	|- ( ph -> K e. ( M ... N ) )
iseqf1olemfvp.t	|- ( ph -> T : ( M ... N ) -1-1-onto-> ( M ... N ) )
iseqf1olemfvp.a	|- ( ph -> A e. ( M ... N ) )
iseqf1olemfvp.g	|- ( ( ph /\ x e. ( ZZ>= ` M ) ) -> ( G ` x ) e. S )
iseqf1olemfvp.p	|- P = ( x e. ( ZZ>= ` M ) |-> if ( x <_ N , ( G ` ( f ` x ) ) , ( G ` M ) ) )

Assertion

Ref	Expression
iseqf1olemfvp	|- ( ph -> ( [_ T / f ]_ P ` A ) = ( G ` ( T ` A ) ) )

Distinct variable groups:   x, A   f, G, x   x, K   f, M, x   f, N, x   x, S   T, f, x   ph, x

Allowed substitution hints:   ph( f)   A( f)   P( x, f)   S( f)   K( f)

Proof of Theorem iseqf1olemfvp

Step	Hyp	Ref	Expression
1		iseqf1olemfvp.p	. . . . 5 |- P = ( x e. ( ZZ>= ` M ) |-> if ( x <_ N , ( G ` ( f ` x ) ) , ( G ` M ) ) )
2	1	csbeq2i 3154	. . . 4 |- [_ T / f ]_ P = [_ T / f ]_ ( x e. ( ZZ>= ` M ) |-> if ( x <_ N , ( G ` ( f ` x ) ) , ( G ` M ) ) )
3		iseqf1olemfvp.t	. . . . . . 7 |- ( ph -> T : ( M ... N ) -1-1-onto-> ( M ... N ) )
4		f1of 5583	. . . . . . 7 |- ( T : ( M ... N ) -1-1-onto-> ( M ... N ) -> T : ( M ... N ) --> ( M ... N ) )
5	3, 4	syl 14	. . . . . 6 |- ( ph -> T : ( M ... N ) --> ( M ... N ) )
6		iseqf1olemfvp.k	. . . . . . . 8 |- ( ph -> K e. ( M ... N ) )
7		elfzel1 10258	. . . . . . . 8 |- ( K e. ( M ... N ) -> M e. ZZ )
8	6, 7	syl 14	. . . . . . 7 |- ( ph -> M e. ZZ )
9		elfzel2 10257	. . . . . . . 8 |- ( K e. ( M ... N ) -> N e. ZZ )
10	6, 9	syl 14	. . . . . . 7 |- ( ph -> N e. ZZ )
11	8, 10	fzfigd 10692	. . . . . 6 |- ( ph -> ( M ... N ) e. Fin )
12		fex 5882	. . . . . 6 |- ( ( T : ( M ... N ) --> ( M ... N ) /\ ( M ... N ) e. Fin ) -> T e. _V )
13	5, 11, 12	syl2anc 411	. . . . 5 |- ( ph -> T e. _V )
14		nfcvd 2375	. . . . . 6 |- ( T e. _V -> F/_ f ( x e. ( ZZ>= ` M ) |-> if ( x <_ N , ( G ` ( T ` x ) ) , ( G ` M ) ) ) )
15		fveq1 5638	. . . . . . . . 9 |- ( f = T -> ( f ` x ) = ( T ` x ) )
16	15	fveq2d 5643	. . . . . . . 8 |- ( f = T -> ( G ` ( f ` x ) ) = ( G ` ( T ` x ) ) )
17	16	ifeq1d 3623	. . . . . . 7 |- ( f = T -> if ( x <_ N , ( G ` ( f ` x ) ) , ( G ` M ) ) = if ( x <_ N , ( G ` ( T ` x ) ) , ( G ` M ) ) )
18	17	mpteq2dv 4180	. . . . . 6 |- ( f = T -> ( x e. ( ZZ>= ` M ) |-> if ( x <_ N , ( G ` ( f ` x ) ) , ( G ` M ) ) ) = ( x e. ( ZZ>= ` M ) |-> if ( x <_ N , ( G ` ( T ` x ) ) , ( G ` M ) ) ) )
19	14, 18	csbiegf 3171	. . . . 5 |- ( T e. _V -> [_ T / f ]_ ( x e. ( ZZ>= ` M ) |-> if ( x <_ N , ( G ` ( f ` x ) ) , ( G ` M ) ) ) = ( x e. ( ZZ>= ` M ) |-> if ( x <_ N , ( G ` ( T ` x ) ) , ( G ` M ) ) ) )
20	13, 19	syl 14	. . . 4 |- ( ph -> [_ T / f ]_ ( x e. ( ZZ>= ` M ) |-> if ( x <_ N , ( G ` ( f ` x ) ) , ( G ` M ) ) ) = ( x e. ( ZZ>= ` M ) |-> if ( x <_ N , ( G ` ( T ` x ) ) , ( G ` M ) ) ) )
21	2, 20	eqtrid 2276	. . 3 |- ( ph -> [_ T / f ]_ P = ( x e. ( ZZ>= ` M ) |-> if ( x <_ N , ( G ` ( T ` x ) ) , ( G ` M ) ) ) )
22		simpr 110	. . . . 5 |- ( ( ph /\ x = A ) -> x = A )
23	22	breq1d 4098	. . . 4 |- ( ( ph /\ x = A ) -> ( x <_ N <-> A <_ N ) )
24	22	fveq2d 5643	. . . . 5 |- ( ( ph /\ x = A ) -> ( T ` x ) = ( T ` A ) )
25	24	fveq2d 5643	. . . 4 |- ( ( ph /\ x = A ) -> ( G ` ( T ` x ) ) = ( G ` ( T ` A ) ) )
26	23, 25	ifbieq1d 3628	. . 3 |- ( ( ph /\ x = A ) -> if ( x <_ N , ( G ` ( T ` x ) ) , ( G ` M ) ) = if ( A <_ N , ( G ` ( T ` A ) ) , ( G ` M ) ) )
27		iseqf1olemfvp.a	. . . 4 |- ( ph -> A e. ( M ... N ) )
28		elfzuz 10255	. . . 4 |- ( A e. ( M ... N ) -> A e. ( ZZ>= ` M ) )
29	27, 28	syl 14	. . 3 |- ( ph -> A e. ( ZZ>= ` M ) )
30		elfzle2 10262	. . . . . 6 |- ( A e. ( M ... N ) -> A <_ N )
31	27, 30	syl 14	. . . . 5 |- ( ph -> A <_ N )
32	31	iftrued 3612	. . . 4 |- ( ph -> if ( A <_ N , ( G ` ( T ` A ) ) , ( G ` M ) ) = ( G ` ( T ` A ) ) )
33		fveq2 5639	. . . . . 6 |- ( x = ( T ` A ) -> ( G ` x ) = ( G ` ( T ` A ) ) )
34	33	eleq1d 2300	. . . . 5 |- ( x = ( T ` A ) -> ( ( G ` x ) e. S <-> ( G ` ( T ` A ) ) e. S ) )
35		iseqf1olemfvp.g	. . . . . 6 |- ( ( ph /\ x e. ( ZZ>= ` M ) ) -> ( G ` x ) e. S )
36	35	ralrimiva 2605	. . . . 5 |- ( ph -> A. x e. ( ZZ>= ` M ) ( G ` x ) e. S )
37	5, 27	ffvelcdmd 5783	. . . . . 6 |- ( ph -> ( T ` A ) e. ( M ... N ) )
38		elfzuz 10255	. . . . . 6 |- ( ( T ` A ) e. ( M ... N ) -> ( T ` A ) e. ( ZZ>= ` M ) )
39	37, 38	syl 14	. . . . 5 |- ( ph -> ( T ` A ) e. ( ZZ>= ` M ) )
40	34, 36, 39	rspcdva 2915	. . . 4 |- ( ph -> ( G ` ( T ` A ) ) e. S )
41	32, 40	eqeltrd 2308	. . 3 |- ( ph -> if ( A <_ N , ( G ` ( T ` A ) ) , ( G ` M ) ) e. S )
42	21, 26, 29, 41	fvmptd 5727	. 2 |- ( ph -> ( [_ T / f ]_ P ` A ) = if ( A <_ N , ( G ` ( T ` A ) ) , ( G ` M ) ) )
43	42, 32	eqtrd 2264	1 |- ( ph -> ( [_ T / f ]_ P ` A ) = ( G ` ( T ` A ) ) )

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1397   e. wcel 2202   _Vcvv 2802   [_csb 3127   ifcif 3605   class class class wbr 4088   |-> cmpt 4150   -->wf 5322   -1-1-onto->wf1o 5325   ` cfv 5326  (class class class)co 6017   Fincfn 6908   <_ cle 8214   ZZcz 9478   ZZ>=cuz 9754   ...cfz 10242

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-coll 4204  ax-sep 4207  ax-nul 4215  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-setind 4635  ax-iinf 4686  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-distr 8135  ax-i2m1 8136  ax-0lt1 8137  ax-0id 8139  ax-rnegex 8140  ax-cnre 8142  ax-pre-ltirr 8143  ax-pre-ltwlin 8144  ax-pre-lttrn 8145  ax-pre-apti 8146  ax-pre-ltadd 8147

This theorem depends on definitions:  df-bi 117  df-dc 842  df-3or 1005  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-reu 2517  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-if 3606  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-iun 3972  df-br 4089  df-opab 4151  df-mpt 4152  df-tr 4188  df-id 4390  df-iord 4463  df-on 4465  df-ilim 4466  df-suc 4468  df-iom 4689  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-f1 5331  df-fo 5332  df-f1o 5333  df-fv 5334  df-riota 5970  df-ov 6020  df-oprab 6021  df-mpo 6022  df-1st 6302  df-2nd 6303  df-recs 6470  df-frec 6556  df-1o 6581  df-er 6701  df-en 6909  df-fin 6911  df-pnf 8215  df-mnf 8216  df-xr 8217  df-ltxr 8218  df-le 8219  df-sub 8351  df-neg 8352  df-inn 9143  df-n0 9402  df-z 9479  df-uz 9755  df-fz 10243

This theorem is referenced by:  seq3f1olemqsumkj  10772  seq3f1olemqsumk  10773