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Theorem frecuzrdgfunlem 9791
Description: The recursive definition generator on upper integers produces a a function. (Contributed by Jim Kingdon, 24-Apr-2022.)
Hypotheses
Ref Expression
frecuzrdgrclt.c  |-  ( ph  ->  C  e.  ZZ )
frecuzrdgrclt.a  |-  ( ph  ->  A  e.  S )
frecuzrdgrclt.t  |-  ( ph  ->  S  C_  T )
frecuzrdgrclt.f  |-  ( (
ph  /\  ( x  e.  ( ZZ>= `  C )  /\  y  e.  S
) )  ->  (
x F y )  e.  S )
frecuzrdgrclt.r  |-  R  = frec ( ( x  e.  ( ZZ>= `  C ) ,  y  e.  T  |-> 
<. ( x  +  1 ) ,  ( x F y ) >.
) ,  <. C ,  A >. )
frecuzrdgfunlem.g  |-  G  = frec ( ( x  e.  ZZ  |->  ( x  + 
1 ) ) ,  C )
Assertion
Ref Expression
frecuzrdgfunlem  |-  ( ph  ->  Fun  ran  R )
Distinct variable groups:    x, C, y   
x, F, y    x, S, y    x, T, y    ph, x, y    x, G, y    x, R, y
Allowed substitution hints:    A( x, y)

Proof of Theorem frecuzrdgfunlem
Dummy variables  z  w  v are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 frecuzrdgrclt.c . . . . . 6  |-  ( ph  ->  C  e.  ZZ )
2 frecuzrdgrclt.a . . . . . 6  |-  ( ph  ->  A  e.  S )
3 frecuzrdgrclt.t . . . . . 6  |-  ( ph  ->  S  C_  T )
4 frecuzrdgrclt.f . . . . . 6  |-  ( (
ph  /\  ( x  e.  ( ZZ>= `  C )  /\  y  e.  S
) )  ->  (
x F y )  e.  S )
5 frecuzrdgrclt.r . . . . . 6  |-  R  = frec ( ( x  e.  ( ZZ>= `  C ) ,  y  e.  T  |-> 
<. ( x  +  1 ) ,  ( x F y ) >.
) ,  <. C ,  A >. )
61, 2, 3, 4, 5frecuzrdgrclt 9787 . . . . 5  |-  ( ph  ->  R : om --> ( (
ZZ>= `  C )  X.  S ) )
7 frn 5155 . . . . 5  |-  ( R : om --> ( (
ZZ>= `  C )  X.  S )  ->  ran  R 
C_  ( ( ZZ>= `  C )  X.  S
) )
86, 7syl 14 . . . 4  |-  ( ph  ->  ran  R  C_  (
( ZZ>= `  C )  X.  S ) )
9 xpss 4534 . . . 4  |-  ( (
ZZ>= `  C )  X.  S )  C_  ( _V  X.  _V )
108, 9syl6ss 3035 . . 3  |-  ( ph  ->  ran  R  C_  ( _V  X.  _V ) )
11 df-rel 4435 . . 3  |-  ( Rel 
ran  R  <->  ran  R  C_  ( _V  X.  _V ) )
1210, 11sylibr 132 . 2  |-  ( ph  ->  Rel  ran  R )
13 frecuzrdgfunlem.g . . . . . . . . . 10  |-  G  = frec ( ( x  e.  ZZ  |->  ( x  + 
1 ) ) ,  C )
141, 13frec2uzf1od 9778 . . . . . . . . 9  |-  ( ph  ->  G : om -1-1-onto-> ( ZZ>= `  C )
)
15 f1ocnvdm 5542 . . . . . . . . 9  |-  ( ( G : om -1-1-onto-> ( ZZ>= `  C )  /\  v  e.  ( ZZ>=
`  C ) )  ->  ( `' G `  v )  e.  om )
1614, 15sylan 277 . . . . . . . 8  |-  ( (
ph  /\  v  e.  ( ZZ>= `  C )
)  ->  ( `' G `  v )  e.  om )
176ffvelrnda 5418 . . . . . . . 8  |-  ( (
ph  /\  ( `' G `  v )  e.  om )  ->  ( R `  ( `' G `  v )
)  e.  ( (
ZZ>= `  C )  X.  S ) )
1816, 17syldan 276 . . . . . . 7  |-  ( (
ph  /\  v  e.  ( ZZ>= `  C )
)  ->  ( R `  ( `' G `  v ) )  e.  ( ( ZZ>= `  C
)  X.  S ) )
19 xp2nd 5919 . . . . . . 7  |-  ( ( R `  ( `' G `  v ) )  e.  ( (
ZZ>= `  C )  X.  S )  ->  ( 2nd `  ( R `  ( `' G `  v ) ) )  e.  S
)
2018, 19syl 14 . . . . . 6  |-  ( (
ph  /\  v  e.  ( ZZ>= `  C )
)  ->  ( 2nd `  ( R `  ( `' G `  v ) ) )  e.  S
)
21 ffn 5147 . . . . . . . . . 10  |-  ( R : om --> ( (
ZZ>= `  C )  X.  S )  ->  R  Fn  om )
22 fvelrnb 5336 . . . . . . . . . 10  |-  ( R  Fn  om  ->  ( <. v ,  z >.  e.  ran  R  <->  E. w  e.  om  ( R `  w )  =  <. v ,  z >. )
)
236, 21, 223syl 17 . . . . . . . . 9  |-  ( ph  ->  ( <. v ,  z
>.  e.  ran  R  <->  E. w  e.  om  ( R `  w )  =  <. v ,  z >. )
)
246ffvelrnda 5418 . . . . . . . . . . . . . . . . . . 19  |-  ( (
ph  /\  w  e.  om )  ->  ( R `  w )  e.  ( ( ZZ>= `  C )  X.  S ) )
25 1st2nd2 5927 . . . . . . . . . . . . . . . . . . 19  |-  ( ( R `  w )  e.  ( ( ZZ>= `  C )  X.  S
)  ->  ( R `  w )  =  <. ( 1st `  ( R `
 w ) ) ,  ( 2nd `  ( R `  w )
) >. )
2624, 25syl 14 . . . . . . . . . . . . . . . . . 18  |-  ( (
ph  /\  w  e.  om )  ->  ( R `  w )  =  <. ( 1st `  ( R `
 w ) ) ,  ( 2nd `  ( R `  w )
) >. )
271adantr 270 . . . . . . . . . . . . . . . . . . . 20  |-  ( (
ph  /\  w  e.  om )  ->  C  e.  ZZ )
282adantr 270 . . . . . . . . . . . . . . . . . . . 20  |-  ( (
ph  /\  w  e.  om )  ->  A  e.  S )
293adantr 270 . . . . . . . . . . . . . . . . . . . 20  |-  ( (
ph  /\  w  e.  om )  ->  S  C_  T
)
304adantlr 461 . . . . . . . . . . . . . . . . . . . 20  |-  ( ( ( ph  /\  w  e.  om )  /\  (
x  e.  ( ZZ>= `  C )  /\  y  e.  S ) )  -> 
( x F y )  e.  S )
31 simpr 108 . . . . . . . . . . . . . . . . . . . 20  |-  ( (
ph  /\  w  e.  om )  ->  w  e.  om )
3227, 28, 29, 30, 5, 31, 13frecuzrdgg 9788 . . . . . . . . . . . . . . . . . . 19  |-  ( (
ph  /\  w  e.  om )  ->  ( 1st `  ( R `  w
) )  =  ( G `  w ) )
3332opeq1d 3623 . . . . . . . . . . . . . . . . . 18  |-  ( (
ph  /\  w  e.  om )  ->  <. ( 1st `  ( R `  w
) ) ,  ( 2nd `  ( R `
 w ) )
>.  =  <. ( G `
 w ) ,  ( 2nd `  ( R `  w )
) >. )
3426, 33eqtrd 2120 . . . . . . . . . . . . . . . . 17  |-  ( (
ph  /\  w  e.  om )  ->  ( R `  w )  =  <. ( G `  w ) ,  ( 2nd `  ( R `  w )
) >. )
3534eqeq1d 2096 . . . . . . . . . . . . . . . 16  |-  ( (
ph  /\  w  e.  om )  ->  ( ( R `  w )  =  <. v ,  z
>. 
<-> 
<. ( G `  w
) ,  ( 2nd `  ( R `  w
) ) >.  =  <. v ,  z >. )
)
36 vex 2622 . . . . . . . . . . . . . . . . . 18  |-  v  e. 
_V
37 vex 2622 . . . . . . . . . . . . . . . . . 18  |-  z  e. 
_V
3836, 37opth2 4058 . . . . . . . . . . . . . . . . 17  |-  ( <.
( G `  w
) ,  ( 2nd `  ( R `  w
) ) >.  =  <. v ,  z >.  <->  ( ( G `  w )  =  v  /\  ( 2nd `  ( R `  w ) )  =  z ) )
3938simplbi 268 . . . . . . . . . . . . . . . 16  |-  ( <.
( G `  w
) ,  ( 2nd `  ( R `  w
) ) >.  =  <. v ,  z >.  ->  ( G `  w )  =  v )
4035, 39syl6bi 161 . . . . . . . . . . . . . . 15  |-  ( (
ph  /\  w  e.  om )  ->  ( ( R `  w )  =  <. v ,  z
>.  ->  ( G `  w )  =  v ) )
41 f1ocnvfv 5540 . . . . . . . . . . . . . . . 16  |-  ( ( G : om -1-1-onto-> ( ZZ>= `  C )  /\  w  e.  om )  ->  ( ( G `
 w )  =  v  ->  ( `' G `  v )  =  w ) )
4214, 41sylan 277 . . . . . . . . . . . . . . 15  |-  ( (
ph  /\  w  e.  om )  ->  ( ( G `  w )  =  v  ->  ( `' G `  v )  =  w ) )
4340, 42syld 44 . . . . . . . . . . . . . 14  |-  ( (
ph  /\  w  e.  om )  ->  ( ( R `  w )  =  <. v ,  z
>.  ->  ( `' G `  v )  =  w ) )
44 fveq2 5289 . . . . . . . . . . . . . . 15  |-  ( ( `' G `  v )  =  w  ->  ( R `  ( `' G `  v )
)  =  ( R `
 w ) )
4544fveq2d 5293 . . . . . . . . . . . . . 14  |-  ( ( `' G `  v )  =  w  ->  ( 2nd `  ( R `  ( `' G `  v ) ) )  =  ( 2nd `  ( R `
 w ) ) )
4643, 45syl6 33 . . . . . . . . . . . . 13  |-  ( (
ph  /\  w  e.  om )  ->  ( ( R `  w )  =  <. v ,  z
>.  ->  ( 2nd `  ( R `  ( `' G `  v )
) )  =  ( 2nd `  ( R `
 w ) ) ) )
4746imp 122 . . . . . . . . . . . 12  |-  ( ( ( ph  /\  w  e.  om )  /\  ( R `  w )  =  <. v ,  z
>. )  ->  ( 2nd `  ( R `  ( `' G `  v ) ) )  =  ( 2nd `  ( R `
 w ) ) )
4836, 37op2ndd 5902 . . . . . . . . . . . . 13  |-  ( ( R `  w )  =  <. v ,  z
>.  ->  ( 2nd `  ( R `  w )
)  =  z )
4948adantl 271 . . . . . . . . . . . 12  |-  ( ( ( ph  /\  w  e.  om )  /\  ( R `  w )  =  <. v ,  z
>. )  ->  ( 2nd `  ( R `  w
) )  =  z )
5047, 49eqtr2d 2121 . . . . . . . . . . 11  |-  ( ( ( ph  /\  w  e.  om )  /\  ( R `  w )  =  <. v ,  z
>. )  ->  z  =  ( 2nd `  ( R `  ( `' G `  v )
) ) )
5150ex 113 . . . . . . . . . 10  |-  ( (
ph  /\  w  e.  om )  ->  ( ( R `  w )  =  <. v ,  z
>.  ->  z  =  ( 2nd `  ( R `
 ( `' G `  v ) ) ) ) )
5251rexlimdva 2489 . . . . . . . . 9  |-  ( ph  ->  ( E. w  e. 
om  ( R `  w )  =  <. v ,  z >.  ->  z  =  ( 2nd `  ( R `  ( `' G `  v )
) ) ) )
5323, 52sylbid 148 . . . . . . . 8  |-  ( ph  ->  ( <. v ,  z
>.  e.  ran  R  -> 
z  =  ( 2nd `  ( R `  ( `' G `  v ) ) ) ) )
5453alrimiv 1802 . . . . . . 7  |-  ( ph  ->  A. z ( <.
v ,  z >.  e.  ran  R  ->  z  =  ( 2nd `  ( R `  ( `' G `  v )
) ) ) )
5554adantr 270 . . . . . 6  |-  ( (
ph  /\  v  e.  ( ZZ>= `  C )
)  ->  A. z
( <. v ,  z
>.  e.  ran  R  -> 
z  =  ( 2nd `  ( R `  ( `' G `  v ) ) ) ) )
56 eqeq2 2097 . . . . . . . . 9  |-  ( w  =  ( 2nd `  ( R `  ( `' G `  v )
) )  ->  (
z  =  w  <->  z  =  ( 2nd `  ( R `
 ( `' G `  v ) ) ) ) )
5756imbi2d 228 . . . . . . . 8  |-  ( w  =  ( 2nd `  ( R `  ( `' G `  v )
) )  ->  (
( <. v ,  z
>.  e.  ran  R  -> 
z  =  w )  <-> 
( <. v ,  z
>.  e.  ran  R  -> 
z  =  ( 2nd `  ( R `  ( `' G `  v ) ) ) ) ) )
5857albidv 1752 . . . . . . 7  |-  ( w  =  ( 2nd `  ( R `  ( `' G `  v )
) )  ->  ( A. z ( <. v ,  z >.  e.  ran  R  ->  z  =  w )  <->  A. z ( <.
v ,  z >.  e.  ran  R  ->  z  =  ( 2nd `  ( R `  ( `' G `  v )
) ) ) ) )
5958spcegv 2707 . . . . . 6  |-  ( ( 2nd `  ( R `
 ( `' G `  v ) ) )  e.  S  ->  ( A. z ( <. v ,  z >.  e.  ran  R  ->  z  =  ( 2nd `  ( R `
 ( `' G `  v ) ) ) )  ->  E. w A. z ( <. v ,  z >.  e.  ran  R  ->  z  =  w ) ) )
6020, 55, 59sylc 61 . . . . 5  |-  ( (
ph  /\  v  e.  ( ZZ>= `  C )
)  ->  E. w A. z ( <. v ,  z >.  e.  ran  R  ->  z  =  w ) )
61 nfv 1466 . . . . . 6  |-  F/ w <. v ,  z >.  e.  ran  R
6261mo2r 2000 . . . . 5  |-  ( E. w A. z (
<. v ,  z >.  e.  ran  R  ->  z  =  w )  ->  E* z <. v ,  z
>.  e.  ran  R )
6360, 62syl 14 . . . 4  |-  ( (
ph  /\  v  e.  ( ZZ>= `  C )
)  ->  E* z <. v ,  z >.  e.  ran  R )
641, 2, 3, 4, 5frecuzrdgdom 9790 . . . . . 6  |-  ( ph  ->  dom  ran  R  =  ( ZZ>= `  C )
)
6564eleq2d 2157 . . . . 5  |-  ( ph  ->  ( v  e.  dom  ran 
R  <->  v  e.  (
ZZ>= `  C ) ) )
6665pm5.32i 442 . . . 4  |-  ( (
ph  /\  v  e.  dom  ran  R )  <->  ( ph  /\  v  e.  ( ZZ>= `  C ) ) )
67 df-br 3838 . . . . 5  |-  ( v ran  R  z  <->  <. v ,  z >.  e.  ran  R )
6867mobii 1985 . . . 4  |-  ( E* z  v ran  R  z 
<->  E* z <. v ,  z >.  e.  ran  R )
6963, 66, 683imtr4i 199 . . 3  |-  ( (
ph  /\  v  e.  dom  ran  R )  ->  E* z  v ran  R  z )
7069ralrimiva 2446 . 2  |-  ( ph  ->  A. v  e.  dom  ran 
R E* z  v ran  R  z )
71 dffun7 5028 . 2  |-  ( Fun 
ran  R  <->  ( Rel  ran  R  /\  A. v  e. 
dom  ran  R E* z 
v ran  R  z
) )
7212, 70, 71sylanbrc 408 1  |-  ( ph  ->  Fun  ran  R )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 102    <-> wb 103   A.wal 1287    = wceq 1289   E.wex 1426    e. wcel 1438   E*wmo 1949   A.wral 2359   E.wrex 2360   _Vcvv 2619    C_ wss 2997   <.cop 3444   class class class wbr 3837    |-> cmpt 3891   omcom 4395    X. cxp 4426   `'ccnv 4427   dom cdm 4428   ran crn 4429   Rel wrel 4433   Fun wfun 4996    Fn wfn 4997   -->wf 4998   -1-1-onto->wf1o 5001   ` cfv 5002  (class class class)co 5634    |-> cmpt2 5636   1stc1st 5891   2ndc2nd 5892  freccfrec 6137   1c1 7330    + caddc 7332   ZZcz 8720   ZZ>=cuz 8988
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-in1 579  ax-in2 580  ax-io 665  ax-5 1381  ax-7 1382  ax-gen 1383  ax-ie1 1427  ax-ie2 1428  ax-8 1440  ax-10 1441  ax-11 1442  ax-i12 1443  ax-bndl 1444  ax-4 1445  ax-13 1449  ax-14 1450  ax-17 1464  ax-i9 1468  ax-ial 1472  ax-i5r 1473  ax-ext 2070  ax-coll 3946  ax-sep 3949  ax-nul 3957  ax-pow 4001  ax-pr 4027  ax-un 4251  ax-setind 4343  ax-iinf 4393  ax-cnex 7415  ax-resscn 7416  ax-1cn 7417  ax-1re 7418  ax-icn 7419  ax-addcl 7420  ax-addrcl 7421  ax-mulcl 7422  ax-addcom 7424  ax-addass 7426  ax-distr 7428  ax-i2m1 7429  ax-0lt1 7430  ax-0id 7432  ax-rnegex 7433  ax-cnre 7435  ax-pre-ltirr 7436  ax-pre-ltwlin 7437  ax-pre-lttrn 7438  ax-pre-ltadd 7440
This theorem depends on definitions:  df-bi 115  df-3or 925  df-3an 926  df-tru 1292  df-fal 1295  df-nf 1395  df-sb 1693  df-eu 1951  df-mo 1952  df-clab 2075  df-cleq 2081  df-clel 2084  df-nfc 2217  df-ne 2256  df-nel 2351  df-ral 2364  df-rex 2365  df-reu 2366  df-rab 2368  df-v 2621  df-sbc 2839  df-csb 2932  df-dif 2999  df-un 3001  df-in 3003  df-ss 3010  df-nul 3285  df-pw 3427  df-sn 3447  df-pr 3448  df-op 3450  df-uni 3649  df-int 3684  df-iun 3727  df-br 3838  df-opab 3892  df-mpt 3893  df-tr 3929  df-id 4111  df-iord 4184  df-on 4186  df-ilim 4187  df-suc 4189  df-iom 4396  df-xp 4434  df-rel 4435  df-cnv 4436  df-co 4437  df-dm 4438  df-rn 4439  df-res 4440  df-ima 4441  df-iota 4967  df-fun 5004  df-fn 5005  df-f 5006  df-f1 5007  df-fo 5008  df-f1o 5009  df-fv 5010  df-riota 5590  df-ov 5637  df-oprab 5638  df-mpt2 5639  df-1st 5893  df-2nd 5894  df-recs 6052  df-frec 6138  df-pnf 7503  df-mnf 7504  df-xr 7505  df-ltxr 7506  df-le 7507  df-sub 7634  df-neg 7635  df-inn 8395  df-n0 8644  df-z 8721  df-uz 8989
This theorem is referenced by:  frecuzrdgfun  9792
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