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Theorem seq1cd 10831
Description: Initial value of the recursive sequence builder. A version of seq3-1 10824 which provides two classes 
D and  C for the terms and the value being accumulated, respectively. (Contributed by Jim Kingdon, 19-Jul-2023.)
Hypotheses
Ref Expression
seq1cd.1  |-  ( ph  ->  ( F `  M
)  e.  C )
seq1cd.2  |-  ( (
ph  /\  ( x  e.  C  /\  y  e.  D ) )  -> 
( x  .+  y
)  e.  C )
seq1cd.4  |-  ( ph  ->  M  e.  ZZ )
seq1cd.5  |-  ( (
ph  /\  x  e.  ( ZZ>= `  ( M  +  1 ) ) )  ->  ( F `  x )  e.  D
)
Assertion
Ref Expression
seq1cd  |-  ( ph  ->  (  seq M ( 
.+  ,  F ) `
 M )  =  ( F `  M
) )
Distinct variable groups:    x,  .+ , y    x, C, y    x, D, y    x, F, y   
x, M, y    ph, x, y

Proof of Theorem seq1cd
Dummy variables  s  t  w  z  u  v are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 seq1cd.4 . 2  |-  ( ph  ->  M  e.  ZZ )
2 seq1cd.1 . 2  |-  ( ph  ->  ( F `  M
)  e.  C )
3 ssv 3260 . . 3  |-  C  C_  _V
43a1i 9 . 2  |-  ( ph  ->  C  C_  _V )
5 seq1cd.5 . . 3  |-  ( (
ph  /\  x  e.  ( ZZ>= `  ( M  +  1 ) ) )  ->  ( F `  x )  e.  D
)
6 seq1cd.2 . . 3  |-  ( (
ph  /\  ( x  e.  C  /\  y  e.  D ) )  -> 
( x  .+  y
)  e.  C )
75, 6seqovcd 10829 . 2  |-  ( (
ph  /\  ( x  e.  ( ZZ>= `  M )  /\  y  e.  C
) )  ->  (
x ( z  e.  ( ZZ>= `  M ) ,  w  e.  C  |->  ( w  .+  ( F `  ( z  +  1 ) ) ) ) y )  e.  C )
8 iseqvalcbv 10821 . 2  |- frec ( ( s  e.  ( ZZ>= `  M ) ,  t  e.  _V  |->  <. (
s  +  1 ) ,  ( s ( u  e.  ( ZZ>= `  M ) ,  v  e.  C  |->  ( v 
.+  ( F `  ( u  +  1
) ) ) ) t ) >. ) ,  <. M ,  ( F `  M )
>. )  = frec (
( x  e.  (
ZZ>= `  M ) ,  y  e.  _V  |->  <.
( x  +  1 ) ,  ( x ( z  e.  (
ZZ>= `  M ) ,  w  e.  C  |->  ( w  .+  ( F `
 ( z  +  1 ) ) ) ) y ) >.
) ,  <. M , 
( F `  M
) >. )
91, 8, 2, 6, 5seqvalcd 10823 . 2  |-  ( ph  ->  seq M (  .+  ,  F )  =  ran frec ( ( s  e.  (
ZZ>= `  M ) ,  t  e.  _V  |->  <.
( s  +  1 ) ,  ( s ( u  e.  (
ZZ>= `  M ) ,  v  e.  C  |->  ( v  .+  ( F `
 ( u  + 
1 ) ) ) ) t ) >.
) ,  <. M , 
( F `  M
) >. ) )
101, 2, 4, 7, 8, 9frecuzrdg0t 10784 1  |-  ( ph  ->  (  seq M ( 
.+  ,  F ) `
 M )  =  ( F `  M
) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    = wceq 1398    e. wcel 2203   _Vcvv 2813    C_ wss 3211   <.cop 3692   ` cfv 5352  (class class class)co 6050    e. cmpo 6052  freccfrec 6621   1c1 8128    + caddc 8130   ZZcz 9577   ZZ>=cuz 9853    seqcseq 10809
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-1st 6334  df-2nd 6335  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  df-seqfrec 10810
This theorem is referenced by:  ennnfonelem0  13156
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