Theorem frecuzrdg0 10779

Description: Initial value of a recursive definition generator on upper integers. See comment in frec2uz0d 10765 for the description of G as the mapping from om to ( ZZ>= ` C ). (Contributed by Jim Kingdon, 27-May-2020.)

Hypotheses

Ref	Expression
frec2uz.1	|- ( ph -> C e. ZZ )
frec2uz.2	|- G = frec ( ( x e. ZZ |-> ( x + 1 ) ) , C )
frecuzrdgrrn.a	|- ( ph -> A e. S )
frecuzrdgrrn.f	|- ( ( ph /\ ( x e. ( ZZ>= ` C ) /\ y e. S ) ) -> ( x F y ) e. S )
frecuzrdgrrn.2	|- R = frec ( ( x e. ( ZZ>= ` C ) , y e. S |-> <. ( x + 1 ) , ( x F y ) >. ) , <. C , A >. )
frecuzrdgtcl.3	|- ( ph -> T = ran R )

Assertion

Ref	Expression
frecuzrdg0	|- ( ph -> ( T ` C ) = A )

Distinct variable groups:   y, A   x, C, y   y, G   x, F, y   x, S, y   ph, x, y

Allowed substitution hints:   A( x)   R( x, y)   T( x, y)   G( x)

Proof of Theorem frecuzrdg0

Step	Hyp	Ref	Expression
1		frec2uz.1	. . . 4 |- ( ph -> C e. ZZ )
2		frec2uz.2	. . . 4 |- G = frec ( ( x e. ZZ |-> ( x + 1 ) ) , C )
3		frecuzrdgrrn.a	. . . 4 |- ( ph -> A e. S )
4		frecuzrdgrrn.f	. . . 4 |- ( ( ph /\ ( x e. ( ZZ>= ` C ) /\ y e. S ) ) -> ( x F y ) e. S )
5		frecuzrdgrrn.2	. . . 4 |- R = frec ( ( x e. ( ZZ>= ` C ) , y e. S |-> <. ( x + 1 ) , ( x F y ) >. ) , <. C , A >. )
6		frecuzrdgtcl.3	. . . 4 |- ( ph -> T = ran R )
7	1, 2, 3, 4, 5, 6	frecuzrdgtcl 10778	. . 3 |- ( ph -> T : ( ZZ>= ` C ) --> S )
8		ffun 5513	. . 3 |- ( T : ( ZZ>= ` C ) --> S -> Fun T )
9	7, 8	syl 14	. 2 |- ( ph -> Fun T )
10	5	fveq1i 5673	. . . . 5 |- ( R ` (/) ) = (frec ( ( x e. ( ZZ>= ` C ) , y e. S |-> <. ( x + 1 ) , ( x F y ) >. ) , <. C , A >. ) ` (/) )
11		opexg 4346	. . . . . . 7 |- ( ( C e. ZZ /\ A e. S ) -> <. C , A >. e. _V )
12	1, 3, 11	syl2anc 411	. . . . . 6 |- ( ph -> <. C , A >. e. _V )
13		frec0g 6630	. . . . . 6 |- ( <. C , A >. e. _V -> (frec ( ( x e. ( ZZ>= ` C ) , y e. S |-> <. ( x + 1 ) , ( x F y ) >. ) , <. C , A >. ) ` (/) ) = <. C , A >. )
14	12, 13	syl 14	. . . . 5 |- ( ph -> (frec ( ( x e. ( ZZ>= ` C ) , y e. S |-> <. ( x + 1 ) , ( x F y ) >. ) , <. C , A >. ) ` (/) ) = <. C , A >. )
15	10, 14	eqtrid 2279	. . . 4 |- ( ph -> ( R ` (/) ) = <. C , A >. )
16	1, 2, 3, 4, 5	frecuzrdgrcl 10776	. . . . . 6 |- ( ph -> R : om --> ( ( ZZ>= ` C ) X. S ) )
17		ffn 5510	. . . . . 6 |- ( R : om --> ( ( ZZ>= ` C ) X. S ) -> R Fn om )
18	16, 17	syl 14	. . . . 5 |- ( ph -> R Fn om )
19		peano1 4718	. . . . 5 |- (/) e. om
20		fnfvelrn 5811	. . . . 5 |- ( ( R Fn om /\ (/) e. om ) -> ( R ` (/) ) e. ran R )
21	18, 19, 20	sylancl 413	. . . 4 |- ( ph -> ( R ` (/) ) e. ran R )
22	15, 21	eqeltrrd 2312	. . 3 |- ( ph -> <. C , A >. e. ran R )
23	22, 6	eleqtrrd 2314	. 2 |- ( ph -> <. C , A >. e. T )
24		funopfv 5716	. 2 |- ( Fun T -> ( <. C , A >. e. T -> ( T ` C ) = A ) )
25	9, 23, 24	sylc 62	1 |- ( ph -> ( T ` C ) = A )

Syntax hints:   -> wi 4   /\ wa 104   = wceq 1398   e. wcel 2205   _Vcvv 2815   (/)c0 3510   <.cop 3694   |-> cmpt 4173   omcom 4714   X. cxp 4749   ran crn 4752   Fun wfun 5348   Fn wfn 5349   -->wf 5350   ` cfv 5354  (class class class)co 6052   e. cmpo 6054  freccfrec 6623   1c1 8130   + caddc 8132   ZZcz 9579   ZZ>=cuz 9856

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 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-13 2207  ax-14 2208  ax-ext 2216  ax-coll 4227  ax-sep 4230  ax-nul 4238  ax-pow 4289  ax-pr 4324  ax-un 4556  ax-setind 4661  ax-iinf 4712  ax-cnex 8220  ax-resscn 8221  ax-1cn 8222  ax-1re 8223  ax-icn 8224  ax-addcl 8225  ax-addrcl 8226  ax-mulcl 8227  ax-addcom 8229  ax-addass 8231  ax-distr 8233  ax-i2m1 8234  ax-0lt1 8235  ax-0id 8237  ax-rnegex 8238  ax-cnre 8240  ax-pre-ltirr 8241  ax-pre-ltwlin 8242  ax-pre-lttrn 8243  ax-pre-ltadd 8245

This theorem depends on definitions:  df-bi 117  df-3or 1006  df-3an 1007  df-tru 1401  df-fal 1404  df-nf 1510  df-sb 1812  df-eu 2085  df-mo 2086  df-clab 2221  df-cleq 2227  df-clel 2230  df-nfc 2375  df-ne 2415  df-nel 2510  df-ral 2527  df-rex 2528  df-reu 2529  df-rab 2531  df-v 2817  df-sbc 3045  df-csb 3141  df-dif 3215  df-un 3217  df-in 3219  df-ss 3226  df-nul 3511  df-pw 3673  df-sn 3697  df-pr 3698  df-op 3700  df-uni 3917  df-int 3952  df-iun 3995  df-br 4112  df-opab 4174  df-mpt 4175  df-tr 4211  df-id 4416  df-iord 4489  df-on 4491  df-ilim 4492  df-suc 4494  df-iom 4715  df-xp 4757  df-rel 4758  df-cnv 4759  df-co 4760  df-dm 4761  df-rn 4762  df-res 4763  df-ima 4764  df-iota 5314  df-fun 5356  df-fn 5357  df-f 5358  df-f1 5359  df-fo 5360  df-f1o 5361  df-fv 5362  df-riota 6005  df-ov 6055  df-oprab 6056  df-mpo 6057  df-1st 6336  df-2nd 6337  df-recs 6538  df-frec 6624  df-pnf 8312  df-mnf 8313  df-xr 8314  df-ltxr 8315  df-le 8316  df-sub 8448  df-neg 8449  df-inn 9240  df-n0 9499  df-z 9580  df-uz 9857

This theorem is referenced by: (None)