Theorem frec2uzrand 10767

Description: Range of G (see frec2uz0d 10761). (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 9586	. . . . . . . . . . 11 |- ZZ e. _V
3	2	mptex 5912	. . . . . . . . . 10 |- ( x e. ZZ |-> ( x + 1 ) ) e. _V
4		vex 2816	. . . . . . . . . 10 |- z e. _V
5	3, 4	fvex 5690	. . . . . . . . 9 |- ( ( x e. ZZ |-> ( x + 1 ) ) ` z ) e. _V
6	5	ax-gen 1498	. . . . . . . 8 |- A. z ( ( x e. ZZ |-> ( x + 1 ) ) ` z ) e. _V
7		frecfnom 6632	. . . . . . . 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 5450	. . . . . . 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 5724	. . . . . 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 10764	. . . . . . 7 |- ( ( C e. ZZ /\ z e. om ) -> ( G ` z ) e. ( ZZ>= ` C ) )
17		eleq1 2295	. . . . . . 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 2660	. . . . 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 2295	. . . . 5 |- ( w = C -> ( w e. ran G <-> C e. ran G ) )
22		eleq1 2295	. . . . 5 |- ( w = y -> ( w e. ran G <-> y e. ran G ) )
23		eleq1 2295	. . . . 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 10761	. . . . . 6 |- ( C e. ZZ -> ( G ` (/) ) = C )
26		peano1 4716	. . . . . . 7 |- (/) e. om
27		fnfvelrn 5809	. . . . . . 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 2310	. . . . 5 |- ( C e. ZZ -> C e. ran G )
30		eluzel2 9858	. . . . . 6 |- ( y e. ( ZZ>= ` C ) -> C e. ZZ )
31	14, 9, 15	frec2uzsucd 10763	. . . . . . . . . . 11 |- ( ( C e. ZZ /\ z e. om ) -> ( G ` suc z ) = ( ( G ` z ) + 1 ) )
32		oveq1 6057	. . . . . . . . . . 11 |- ( ( G ` z ) = y -> ( ( G ` z ) + 1 ) = ( y + 1 ) )
33	31, 32	sylan9eq 2285	. . . . . . . . . 10 |- ( ( ( C e. ZZ /\ z e. om ) /\ ( G ` z ) = y ) -> ( G ` suc z ) = ( y + 1 ) )
34		peano2 4717	. . . . . . . . . . . 12 |- ( z e. om -> suc z e. om )
35		fnfvelrn 5809	. . . . . . . . . . . 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 2310	. . . . . . . . 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 2660	. . . . . . 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 9920	. . . 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 2230	. 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 1396   = wceq 1398   e. wcel 2203   E.wrex 2521   _Vcvv 2813   (/)c0 3508   |-> cmpt 4171   suc csuc 4486   omcom 4712   ran crn 4750   Fn wfn 5347   ` cfv 5352  (class class class)co 6050  freccfrec 6621   1c1 8128   + caddc 8130   ZZcz 9577   ZZ>=cuz 9853

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 2205  ax-14 2206  ax-ext 2214  ax-coll 4225  ax-sep 4228  ax-nul 4236  ax-pow 4287  ax-pr 4322  ax-un 4554  ax-setind 4659  ax-iinf 4710  ax-cnex 8218  ax-resscn 8219  ax-1cn 8220  ax-1re 8221  ax-icn 8222  ax-addcl 8223  ax-addrcl 8224  ax-mulcl 8225  ax-addcom 8227  ax-addass 8229  ax-distr 8231  ax-i2m1 8232  ax-0lt1 8233  ax-0id 8235  ax-rnegex 8236  ax-cnre 8238  ax-pre-ltirr 8239  ax-pre-ltwlin 8240  ax-pre-lttrn 8241  ax-pre-ltadd 8243

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 2083  df-mo 2084  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ne 2413  df-nel 2508  df-ral 2525  df-rex 2526  df-reu 2527  df-rab 2529  df-v 2815  df-sbc 3043  df-csb 3139  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-nul 3509  df-pw 3671  df-sn 3695  df-pr 3696  df-op 3698  df-uni 3915  df-int 3950  df-iun 3993  df-br 4110  df-opab 4172  df-mpt 4173  df-tr 4209  df-id 4414  df-iord 4487  df-on 4489  df-ilim 4490  df-suc 4492  df-iom 4713  df-xp 4755  df-rel 4756  df-cnv 4757  df-co 4758  df-dm 4759  df-rn 4760  df-res 4761  df-ima 4762  df-iota 5312  df-fun 5354  df-fn 5355  df-f 5356  df-f1 5357  df-fo 5358  df-f1o 5359  df-fv 5360  df-riota 6003  df-ov 6053  df-oprab 6054  df-mpo 6055  df-recs 6536  df-frec 6622  df-pnf 8310  df-mnf 8311  df-xr 8312  df-ltxr 8313  df-le 8314  df-sub 8446  df-neg 8447  df-inn 9238  df-n0 9497  df-z 9578  df-uz 9854

This theorem is referenced by:  frec2uzf1od  10768