Theorem freccllem 6299

Description: Lemma for freccl 6300. Just giving a name to a common expression to simplify the proof. (Contributed by Jim Kingdon, 27-Mar-2022.)

Hypotheses

Ref	Expression
freccl.a	|- ( ph -> A e. S )
freccl.cl	|- ( ( ph /\ z e. S ) -> ( F ` z ) e. S )
freccl.b	|- ( ph -> B e. om )
freccllem.g	|- G = recs ( ( g e. _V |-> { x | ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) } ) )

Assertion

Ref	Expression
freccllem	|- ( ph -> (frec ( F , A ) ` B ) e. S )

Distinct variable groups:   A, g, m, x   z, A, m, x   x, B   g, F, m, x   z, F   S, m, x, z   ph, m, x, z

Allowed substitution hints:   ph( g)   B( z, g, m)   S( g)   G( x, z, g, m)

Proof of Theorem freccllem

Dummy variables f y are mutually distinct and distinct from all other variables.

Step	Hyp	Ref	Expression
1		df-frec 6288	. . . 4 |- frec ( F , A ) = (recs ( ( g e. _V |-> { x | ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) } ) ) |` om )
2		freccllem.g	. . . . 5 |- G = recs ( ( g e. _V |-> { x | ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) } ) )
3	2	reseq1i 4815	. . . 4 |- ( G |` om ) = (recs ( ( g e. _V |-> { x | ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) } ) ) |` om )
4	1, 3	eqtr4i 2163	. . 3 |- frec ( F , A ) = ( G |` om )
5	4	fveq1i 5422	. 2 |- (frec ( F , A ) ` B ) = ( ( G |` om ) ` B )
6		freccl.b	. . . 4 |- ( ph -> B e. om )
7		fvres 5445	. . . 4 |- ( B e. om -> ( ( G |` om ) ` B ) = ( G ` B ) )
8	6, 7	syl 14	. . 3 |- ( ph -> ( ( G |` om ) ` B ) = ( G ` B ) )
9		funmpt 5161	. . . . 5 |- Fun ( g e. _V |-> { x | ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) } )
10	9	a1i 9	. . . 4 |- ( ph -> Fun ( g e. _V |-> { x | ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) } ) )
11		ordom 4520	. . . . 5 |- Ord om
12	11	a1i 9	. . . 4 |- ( ph -> Ord om )
13		vex 2689	. . . . . 6 |- f e. _V
14		simp2 982	. . . . . . 7 |- ( ( ph /\ y e. om /\ f : y --> S ) -> y e. om )
15		simp3 983	. . . . . . 7 |- ( ( ph /\ y e. om /\ f : y --> S ) -> f : y --> S )
16		freccl.cl	. . . . . . . . 9 |- ( ( ph /\ z e. S ) -> ( F ` z ) e. S )
17	16	ralrimiva 2505	. . . . . . . 8 |- ( ph -> A. z e. S ( F ` z ) e. S )
18	17	3ad2ant1 1002	. . . . . . 7 |- ( ( ph /\ y e. om /\ f : y --> S ) -> A. z e. S ( F ` z ) e. S )
19		freccl.a	. . . . . . . 8 |- ( ph -> A e. S )
20	19	3ad2ant1 1002	. . . . . . 7 |- ( ( ph /\ y e. om /\ f : y --> S ) -> A e. S )
21	14, 15, 18, 20	frecabcl 6296	. . . . . 6 |- ( ( ph /\ y e. om /\ f : y --> S ) -> { x | ( E. m e. om ( dom f = suc m /\ x e. ( F ` ( f ` m ) ) ) \/ ( dom f = (/) /\ x e. A ) ) } e. S )
22		dmeq 4739	. . . . . . . . . . . 12 |- ( g = f -> dom g = dom f )
23	22	eqeq1d 2148	. . . . . . . . . . 11 |- ( g = f -> ( dom g = suc m <-> dom f = suc m ) )
24		fveq1 5420	. . . . . . . . . . . . 13 |- ( g = f -> ( g ` m ) = ( f ` m ) )
25	24	fveq2d 5425	. . . . . . . . . . . 12 |- ( g = f -> ( F ` ( g ` m ) ) = ( F ` ( f ` m ) ) )
26	25	eleq2d 2209	. . . . . . . . . . 11 |- ( g = f -> ( x e. ( F ` ( g ` m ) ) <-> x e. ( F ` ( f ` m ) ) ) )
27	23, 26	anbi12d 464	. . . . . . . . . 10 |- ( g = f -> ( ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) <-> ( dom f = suc m /\ x e. ( F ` ( f ` m ) ) ) ) )
28	27	rexbidv 2438	. . . . . . . . 9 |- ( g = f -> ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) <-> E. m e. om ( dom f = suc m /\ x e. ( F ` ( f ` m ) ) ) ) )
29	22	eqeq1d 2148	. . . . . . . . . 10 |- ( g = f -> ( dom g = (/) <-> dom f = (/) ) )
30	29	anbi1d 460	. . . . . . . . 9 |- ( g = f -> ( ( dom g = (/) /\ x e. A ) <-> ( dom f = (/) /\ x e. A ) ) )
31	28, 30	orbi12d 782	. . . . . . . 8 |- ( g = f -> ( ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) <-> ( E. m e. om ( dom f = suc m /\ x e. ( F ` ( f ` m ) ) ) \/ ( dom f = (/) /\ x e. A ) ) ) )
32	31	abbidv 2257	. . . . . . 7 |- ( g = f -> { x | ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) } = { x | ( E. m e. om ( dom f = suc m /\ x e. ( F ` ( f ` m ) ) ) \/ ( dom f = (/) /\ x e. A ) ) } )
33		eqid 2139	. . . . . . 7 |- ( g e. _V |-> { x | ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) } ) = ( g e. _V |-> { x | ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) } )
34	32, 33	fvmptg 5497	. . . . . 6 |- ( ( f e. _V /\ { x | ( E. m e. om ( dom f = suc m /\ x e. ( F ` ( f ` m ) ) ) \/ ( dom f = (/) /\ x e. A ) ) } e. S ) -> ( ( g e. _V |-> { x | ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) } ) ` f ) = { x | ( E. m e. om ( dom f = suc m /\ x e. ( F ` ( f ` m ) ) ) \/ ( dom f = (/) /\ x e. A ) ) } )
35	13, 21, 34	sylancr 410	. . . . 5 |- ( ( ph /\ y e. om /\ f : y --> S ) -> ( ( g e. _V |-> { x | ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) } ) ` f ) = { x | ( E. m e. om ( dom f = suc m /\ x e. ( F ` ( f ` m ) ) ) \/ ( dom f = (/) /\ x e. A ) ) } )
36	35, 21	eqeltrd 2216	. . . 4 |- ( ( ph /\ y e. om /\ f : y --> S ) -> ( ( g e. _V |-> { x | ( E. m e. om ( dom g = suc m /\ x e. ( F ` ( g ` m ) ) ) \/ ( dom g = (/) /\ x e. A ) ) } ) ` f ) e. S )
37		limom 4527	. . . . . . 7 |- Lim om
38		limuni 4318	. . . . . . 7 |- ( Lim om -> om = U. om )
39	37, 38	ax-mp 5	. . . . . 6 |- om = U. om
40	39	eleq2i 2206	. . . . 5 |- ( y e. om <-> y e. U. om )
41		peano2 4509	. . . . . 6 |- ( y e. om -> suc y e. om )
42	41	adantl 275	. . . . 5 |- ( ( ph /\ y e. om ) -> suc y e. om )
43	40, 42	sylan2br 286	. . . 4 |- ( ( ph /\ y e. U. om ) -> suc y e. om )
44	6, 39	eleqtrdi 2232	. . . 4 |- ( ph -> B e. U. om )
45	2, 10, 12, 36, 43, 44	tfrcl 6261	. . 3 |- ( ph -> ( G ` B ) e. S )
46	8, 45	eqeltrd 2216	. 2 |- ( ph -> ( ( G |` om ) ` B ) e. S )
47	5, 46	eqeltrid 2226	1 |- ( ph -> (frec ( F , A ) ` B ) e. S )

Syntax hints:   -> wi 4   /\ wa 103   \/ wo 697   /\ w3a 962   = wceq 1331   e. wcel 1480   {cab 2125   A.wral 2416   E.wrex 2417   _Vcvv 2686   (/)c0 3363   U.cuni 3736   |-> cmpt 3989   Ord word 4284   Lim wlim 4286   suc csuc 4287   omcom 4504   dom cdm 4539   |` cres 4541   Fun wfun 5117   -->wf 5119   ` cfv 5123  recscrecs 6201  freccfrec 6287

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 603  ax-in2 604  ax-io 698  ax-5 1423  ax-7 1424  ax-gen 1425  ax-ie1 1469  ax-ie2 1470  ax-8 1482  ax-10 1483  ax-11 1484  ax-i12 1485  ax-bndl 1486  ax-4 1487  ax-13 1491  ax-14 1492  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-ext 2121  ax-coll 4043  ax-sep 4046  ax-nul 4054  ax-pow 4098  ax-pr 4131  ax-un 4355  ax-setind 4452  ax-iinf 4502

This theorem depends on definitions:  df-bi 116  df-3an 964  df-tru 1334  df-fal 1337  df-nf 1437  df-sb 1736  df-eu 2002  df-mo 2003  df-clab 2126  df-cleq 2132  df-clel 2135  df-nfc 2270  df-ne 2309  df-ral 2421  df-rex 2422  df-reu 2423  df-rab 2425  df-v 2688  df-sbc 2910  df-csb 3004  df-dif 3073  df-un 3075  df-in 3077  df-ss 3084  df-nul 3364  df-pw 3512  df-sn 3533  df-pr 3534  df-op 3536  df-uni 3737  df-int 3772  df-iun 3815  df-br 3930  df-opab 3990  df-mpt 3991  df-tr 4027  df-id 4215  df-iord 4288  df-on 4290  df-ilim 4291  df-suc 4293  df-iom 4505  df-xp 4545  df-rel 4546  df-cnv 4547  df-co 4548  df-dm 4549  df-rn 4550  df-res 4551  df-ima 4552  df-iota 5088  df-fun 5125  df-fn 5126  df-f 5127  df-f1 5128  df-fo 5129  df-f1o 5130  df-fv 5131  df-recs 6202  df-frec 6288

This theorem is referenced by:  freccl  6300