Theorem iseqf1olemfvp 10928

Description: Lemma for seq3f1o 10935. (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 3174	. . . 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 5637	. . . . . . 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 10409	. . . . . . . 8 |- ( K e. ( M ... N ) -> M e. ZZ )
8	6, 7	syl 14	. . . . . . 7 |- ( ph -> M e. ZZ )
9		elfzel2 10408	. . . . . . . 8 |- ( K e. ( M ... N ) -> N e. ZZ )
10	6, 9	syl 14	. . . . . . 7 |- ( ph -> N e. ZZ )
11	8, 10	fzfigd 10849	. . . . . 6 |- ( ph -> ( M ... N ) e. Fin )
12		fex 5940	. . . . . 6 |- ( ( T : ( M ... N ) --> ( M ... N ) /\ ( M ... N ) e. Fin ) -> T e. _V )
13	5, 11, 12	syl2anc 415	. . . . 5 |- ( ph -> T e. _V )
14		nfcvd 2393	. . . . . 6 |- ( T e. _V -> F/_ f ( x e. ( ZZ>= ` M ) |-> if ( x <_ N , ( G ` ( T ` x ) ) , ( G ` M ) ) ) )
15		fveq1 5692	. . . . . . . . 9 |- ( f = T -> ( f ` x ) = ( T ` x ) )
16	15	fveq2d 5697	. . . . . . . 8 |- ( f = T -> ( G ` ( f ` x ) ) = ( G ` ( T ` x ) ) )
17	16	ifeq1d 3658	. . . . . . 7 |- ( f = T -> if ( x <_ N , ( G ` ( f ` x ) ) , ( G ` M ) ) = if ( x <_ N , ( G ` ( T ` x ) ) , ( G ` M ) ) )
18	17	mpteq2dv 4220	. . . . . 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 3191	. . . . 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 2283	. . 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 4138	. . . 4 |- ( ( ph /\ x = A ) -> ( x <_ N <-> A <_ N ) )
24	22	fveq2d 5697	. . . . 5 |- ( ( ph /\ x = A ) -> ( T ` x ) = ( T ` A ) )
25	24	fveq2d 5697	. . . 4 |- ( ( ph /\ x = A ) -> ( G ` ( T ` x ) ) = ( G ` ( T ` A ) ) )
26	23, 25	ifbieq1d 3663	. . 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 10406	. . . 4 |- ( A e. ( M ... N ) -> A e. ( ZZ>= ` M ) )
29	27, 28	syl 14	. . 3 |- ( ph -> A e. ( ZZ>= ` M ) )
30		elfzle2 10414	. . . . . 6 |- ( A e. ( M ... N ) -> A <_ N )
31	27, 30	syl 14	. . . . 5 |- ( ph -> A <_ N )
32	31	iftrued 3647	. . . 4 |- ( ph -> if ( A <_ N , ( G ` ( T ` A ) ) , ( G ` M ) ) = ( G ` ( T ` A ) ) )
33		fveq2 5693	. . . . . 6 |- ( x = ( T ` A ) -> ( G ` x ) = ( G ` ( T ` A ) ) )
34	33	eleq1d 2307	. . . . 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 2623	. . . . 5 |- ( ph -> A. x e. ( ZZ>= ` M ) ( G ` x ) e. S )
37	5, 27	ffvelcdmd 5838	. . . . . 6 |- ( ph -> ( T ` A ) e. ( M ... N ) )
38		elfzuz 10406	. . . . . 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 2934	. . . 4 |- ( ph -> ( G ` ( T ` A ) ) e. S )
41	32, 40	eqeltrd 2315	. . 3 |- ( ph -> if ( A <_ N , ( G ` ( T ` A ) ) , ( G ` M ) ) e. S )
42	21, 26, 29, 41	fvmptd 5783	. 2 |- ( ph -> ( [_ T / f ]_ P ` A ) = if ( A <_ N , ( G ` ( T ` A ) ) , ( G ` M ) ) )
43	42, 32	eqtrd 2271	1 |- ( ph -> ( [_ T / f ]_ P ` A ) = ( G ` ( T ` A ) ) )

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1402   e. wcel 2209   _Vcvv 2821   [_csb 3147   ifcif 3638   class class class wbr 4128   |-> cmpt 4190   -->wf 5371   -1-1-onto->wf1o 5374   ` cfv 5375  (class class class)co 6078   Fincfn 7015   <_ cle 8354   ZZcz 9626   ZZ>=cuz 9903   ...cfz 10393

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 623  ax-in2 624  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-coll 4244  ax-sep 4247  ax-nul 4257  ax-pow 4309  ax-pr 4344  ax-un 4576  ax-setind 4682  ax-iinf 4733  ax-cnex 8263  ax-resscn 8264  ax-1cn 8265  ax-1re 8266  ax-icn 8267  ax-addcl 8268  ax-addrcl 8269  ax-mulcl 8270  ax-addcom 8272  ax-addass 8274  ax-distr 8276  ax-i2m1 8277  ax-0lt1 8278  ax-0id 8280  ax-rnegex 8281  ax-cnre 8283  ax-pre-ltirr 8284  ax-pre-ltwlin 8285  ax-pre-lttrn 8286  ax-pre-apti 8287  ax-pre-ltadd 8288

This theorem depends on definitions:  df-bi 117  df-dc 847  df-3or 1010  df-3an 1011  df-tru 1405  df-fal 1408  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-ne 2421  df-nel 2516  df-ral 2533  df-rex 2534  df-reu 2535  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-dif 3222  df-un 3224  df-in 3226  df-ss 3233  df-nul 3521  df-if 3639  df-pw 3690  df-sn 3714  df-pr 3715  df-op 3717  df-uni 3934  df-int 3969  df-iun 4012  df-br 4129  df-opab 4191  df-mpt 4192  df-tr 4228  df-id 4436  df-iord 4509  df-on 4511  df-ilim 4512  df-suc 4514  df-iom 4736  df-xp 4778  df-rel 4779  df-cnv 4780  df-co 4781  df-dm 4782  df-rn 4783  df-res 4784  df-ima 4785  df-iota 5335  df-fun 5377  df-fn 5378  df-f 5379  df-f1 5380  df-fo 5381  df-f1o 5382  df-fv 5383  df-riota 6031  df-ov 6081  df-oprab 6082  df-mpo 6083  df-1st 6367  df-2nd 6368  df-recs 6569  df-frec 6655  df-1o 6680  df-er 6800  df-en 7016  df-fin 7018  df-pnf 8355  df-mnf 8356  df-xr 8357  df-ltxr 8358  df-le 8359  df-sub 8492  df-neg 8493  df-inn 9287  df-n0 9546  df-z 9627  df-uz 9904  df-fz 10394

This theorem is referenced by:  seq3f1olemqsumkj  10929  seq3f1olemqsumk  10930