Theorem frec2uzrand 10627

Description: Range of G (see frec2uz0d 10621). (Contributed by Jim Kingdon, 17-May-2020.)

Hypotheses

Ref	Expression
frec2uz.1	|- ( ph -> C e. ZZ )
frec2uz.2	|- G = frec ( ( x e. ZZ |-> ( x + 1 ) ) , C )

Assertion

Ref	Expression
frec2uzrand	|- ( ph -> ran G = ( ZZ>= ` C ) )

Distinct variable groups:   x, C   ph, x

Allowed substitution hint:   G( x)

Proof of Theorem frec2uzrand

Dummy variables w y z are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		frec2uz.1	. 2 |- ( ph -> C e. ZZ )
2		zex 9455	. . . . . . . . . . 11 |- ZZ e. _V
3	2	mptex 5865	. . . . . . . . . 10 |- ( x e. ZZ |-> ( x + 1 ) ) e. _V
4		vex 2802	. . . . . . . . . 10 |- z e. _V
5	3, 4	fvex 5647	. . . . . . . . 9 |- ( ( x e. ZZ |-> ( x + 1 ) ) ` z ) e. _V
6	5	ax-gen 1495	. . . . . . . 8 |- A. z ( ( x e. ZZ |-> ( x + 1 ) ) ` z ) e. _V
7		frecfnom 6547	. . . . . . . 8 |- ( ( A. z ( ( x e. ZZ |-> ( x + 1 ) ) ` z ) e. _V /\ C e. ZZ ) -> frec ( ( x e. ZZ |-> ( x + 1 ) ) , C ) Fn om )
8	6, 7	mpan 424	. . . . . . 7 |- ( C e. ZZ -> frec ( ( x e. ZZ |-> ( x + 1 ) ) , C ) Fn om )
9		frec2uz.2	. . . . . . . 8 |- G = frec ( ( x e. ZZ |-> ( x + 1 ) ) , C )
10	9	fneq1i 5415	. . . . . . 7 |- ( G Fn om <-> frec ( ( x e. ZZ |-> ( x + 1 ) ) , C ) Fn om )
11	8, 10	sylibr 134	. . . . . 6 |- ( C e. ZZ -> G Fn om )
12		fvelrnb 5681	. . . . . 6 |- ( G Fn om -> ( y e. ran G <-> E. z e. om ( G ` z ) = y ) )
13	11, 12	syl 14	. . . . 5 |- ( C e. ZZ -> ( y e. ran G <-> E. z e. om ( G ` z ) = y ) )
14		simpl 109	. . . . . . . 8 |- ( ( C e. ZZ /\ z e. om ) -> C e. ZZ )
15		simpr 110	. . . . . . . 8 |- ( ( C e. ZZ /\ z e. om ) -> z e. om )
16	14, 9, 15	frec2uzuzd 10624	. . . . . . 7 |- ( ( C e. ZZ /\ z e. om ) -> ( G ` z ) e. ( ZZ>= ` C ) )
17		eleq1 2292	. . . . . . 7 |- ( ( G ` z ) = y -> ( ( G ` z ) e. ( ZZ>= ` C ) <-> y e. ( ZZ>= ` C ) ) )
18	16, 17	syl5ibcom 155	. . . . . 6 |- ( ( C e. ZZ /\ z e. om ) -> ( ( G ` z ) = y -> y e. ( ZZ>= ` C ) ) )
19	18	rexlimdva 2648	. . . . 5 |- ( C e. ZZ -> ( E. z e. om ( G ` z ) = y -> y e. ( ZZ>= ` C ) ) )
20	13, 19	sylbid 150	. . . 4 |- ( C e. ZZ -> ( y e. ran G -> y e. ( ZZ>= ` C ) ) )
21		eleq1 2292	. . . . 5 |- ( w = C -> ( w e. ran G <-> C e. ran G ) )
22		eleq1 2292	. . . . 5 |- ( w = y -> ( w e. ran G <-> y e. ran G ) )
23		eleq1 2292	. . . . 5 |- ( w = ( y + 1 ) -> ( w e. ran G <-> ( y + 1 ) e. ran G ) )
24		id 19	. . . . . . 7 |- ( C e. ZZ -> C e. ZZ )
25	24, 9	frec2uz0d 10621	. . . . . 6 |- ( C e. ZZ -> ( G ` (/) ) = C )
26		peano1 4686	. . . . . . 7 |- (/) e. om
27		fnfvelrn 5767	. . . . . . 7 |- ( ( G Fn om /\ (/) e. om ) -> ( G ` (/) ) e. ran G )
28	11, 26, 27	sylancl 413	. . . . . 6 |- ( C e. ZZ -> ( G ` (/) ) e. ran G )
29	25, 28	eqeltrrd 2307	. . . . 5 |- ( C e. ZZ -> C e. ran G )
30		eluzel2 9727	. . . . . 6 |- ( y e. ( ZZ>= ` C ) -> C e. ZZ )
31	14, 9, 15	frec2uzsucd 10623	. . . . . . . . . . 11 |- ( ( C e. ZZ /\ z e. om ) -> ( G ` suc z ) = ( ( G ` z ) + 1 ) )
32		oveq1 6008	. . . . . . . . . . 11 |- ( ( G ` z ) = y -> ( ( G ` z ) + 1 ) = ( y + 1 ) )
33	31, 32	sylan9eq 2282	. . . . . . . . . 10 |- ( ( ( C e. ZZ /\ z e. om ) /\ ( G ` z ) = y ) -> ( G ` suc z ) = ( y + 1 ) )
34		peano2 4687	. . . . . . . . . . . 12 |- ( z e. om -> suc z e. om )
35		fnfvelrn 5767	. . . . . . . . . . . 12 |- ( ( G Fn om /\ suc z e. om ) -> ( G ` suc z ) e. ran G )
36	11, 34, 35	syl2an 289	. . . . . . . . . . 11 |- ( ( C e. ZZ /\ z e. om ) -> ( G ` suc z ) e. ran G )
37	36	adantr 276	. . . . . . . . . 10 |- ( ( ( C e. ZZ /\ z e. om ) /\ ( G ` z ) = y ) -> ( G ` suc z ) e. ran G )
38	33, 37	eqeltrrd 2307	. . . . . . . . 9 |- ( ( ( C e. ZZ /\ z e. om ) /\ ( G ` z ) = y ) -> ( y + 1 ) e. ran G )
39	38	ex 115	. . . . . . . 8 |- ( ( C e. ZZ /\ z e. om ) -> ( ( G ` z ) = y -> ( y + 1 ) e. ran G ) )
40	39	rexlimdva 2648	. . . . . . 7 |- ( C e. ZZ -> ( E. z e. om ( G ` z ) = y -> ( y + 1 ) e. ran G ) )
41	13, 40	sylbid 150	. . . . . 6 |- ( C e. ZZ -> ( y e. ran G -> ( y + 1 ) e. ran G ) )
42	30, 41	syl 14	. . . . 5 |- ( y e. ( ZZ>= ` C ) -> ( y e. ran G -> ( y + 1 ) e. ran G ) )
43	21, 22, 23, 22, 29, 42	uzind4 9783	. . . 4 |- ( y e. ( ZZ>= ` C ) -> y e. ran G )
44	20, 43	impbid1 142	. . 3 |- ( C e. ZZ -> ( y e. ran G <-> y e. ( ZZ>= ` C ) ) )
45	44	eqrdv 2227	. 2 |- ( C e. ZZ -> ran G = ( ZZ>= ` C ) )
46	1, 45	syl 14	1 |- ( ph -> ran G = ( ZZ>= ` C ) )

Syntax hints:   -> wi 4   /\ wa 104   <-> wb 105   A.wal 1393   = wceq 1395   e. wcel 2200   E.wrex 2509   _Vcvv 2799   (/)c0 3491   |-> cmpt 4145   suc csuc 4456   omcom 4682   ran crn 4720   Fn wfn 5313   ` cfv 5318  (class class class)co 6001  freccfrec 6536   1c1 8000   + caddc 8002   ZZcz 9446   ZZ>=cuz 9722

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 617  ax-in2 618  ax-io 714  ax-5 1493  ax-7 1494  ax-gen 1495  ax-ie1 1539  ax-ie2 1540  ax-8 1550  ax-10 1551  ax-11 1552  ax-i12 1553  ax-bndl 1555  ax-4 1556  ax-17 1572  ax-i9 1576  ax-ial 1580  ax-i5r 1581  ax-13 2202  ax-14 2203  ax-ext 2211  ax-coll 4199  ax-sep 4202  ax-nul 4210  ax-pow 4258  ax-pr 4293  ax-un 4524  ax-setind 4629  ax-iinf 4680  ax-cnex 8090  ax-resscn 8091  ax-1cn 8092  ax-1re 8093  ax-icn 8094  ax-addcl 8095  ax-addrcl 8096  ax-mulcl 8097  ax-addcom 8099  ax-addass 8101  ax-distr 8103  ax-i2m1 8104  ax-0lt1 8105  ax-0id 8107  ax-rnegex 8108  ax-cnre 8110  ax-pre-ltirr 8111  ax-pre-ltwlin 8112  ax-pre-lttrn 8113  ax-pre-ltadd 8115

This theorem depends on definitions:  df-bi 117  df-3or 1003  df-3an 1004  df-tru 1398  df-fal 1401  df-nf 1507  df-sb 1809  df-eu 2080  df-mo 2081  df-clab 2216  df-cleq 2222  df-clel 2225  df-nfc 2361  df-ne 2401  df-nel 2496  df-ral 2513  df-rex 2514  df-reu 2515  df-rab 2517  df-v 2801  df-sbc 3029  df-csb 3125  df-dif 3199  df-un 3201  df-in 3203  df-ss 3210  df-nul 3492  df-pw 3651  df-sn 3672  df-pr 3673  df-op 3675  df-uni 3889  df-int 3924  df-iun 3967  df-br 4084  df-opab 4146  df-mpt 4147  df-tr 4183  df-id 4384  df-iord 4457  df-on 4459  df-ilim 4460  df-suc 4462  df-iom 4683  df-xp 4725  df-rel 4726  df-cnv 4727  df-co 4728  df-dm 4729  df-rn 4730  df-res 4731  df-ima 4732  df-iota 5278  df-fun 5320  df-fn 5321  df-f 5322  df-f1 5323  df-fo 5324  df-f1o 5325  df-fv 5326  df-riota 5954  df-ov 6004  df-oprab 6005  df-mpo 6006  df-recs 6451  df-frec 6537  df-pnf 8183  df-mnf 8184  df-xr 8185  df-ltxr 8186  df-le 8187  df-sub 8319  df-neg 8320  df-inn 9111  df-n0 9370  df-z 9447  df-uz 9723

This theorem is referenced by:  frec2uzf1od  10628