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Theorem findreccl 14254
Description: Please add description here.
Hypothesis
Ref Expression
findreccl.1 |- (z e. P -> (G` z) e. P)
Assertion
Ref Expression
findreccl |- (C e. om -> (A e. P -> (rec(G, A)` C) e. P))
Distinct variable groups:   z,G   z,A   z,P

Proof of Theorem findreccl
StepHypRef Expression
1 rdg0g 5152 . . 3 |- (A e. P -> (rec(G, A)` (/)) = A)
2 eleq1a 1966 . . 3 |- (A e. P -> ((rec(G, A)` (/)) = A -> (rec(G, A)` (/)) e. P))
31, 2mpd 29 . 2 |- (A e. P -> (rec(G, A)` (/)) e. P)
4 nnon 3957 . . . 4 |- (y e. om -> y e. On)
5 rdgsuc 5153 . . . . . 6 |- (y e. On -> (rec(G, A)` suc y) = (G` (rec(G, A)` y)))
65eleq1d 1963 . . . . 5 |- (y e. On -> ((rec(G, A)` suc y) e. P <-> (G` (rec(G, A)` y)) e. P))
7 fveq2 4681 . . . . . . 7 |- (z = (rec(G, A)` y) -> (G` z) = (G` (rec(G, A)` y)))
87eleq1d 1963 . . . . . 6 |- (z = (rec(G, A)` y) -> ((G` z) e. P <-> (G` (rec(G, A)` y)) e. P))
9 findreccl.1 . . . . . 6 |- (z e. P -> (G` z) e. P)
108, 9vtoclga 2352 . . . . 5 |- ((rec(G, A)` y) e. P -> (G` (rec(G, A)` y)) e. P)
116, 10syl5bir 227 . . . 4 |- (y e. On -> ((rec(G, A)` y) e. P -> (rec(G, A)` suc y) e. P))
124, 11syl 12 . . 3 |- (y e. om -> ((rec(G, A)` y) e. P -> (rec(G, A)` suc y) e. P))
1312a1d 15 . 2 |- (y e. om -> (A e. P -> ((rec(G, A)` y) e. P -> (rec(G, A)` suc y) e. P)))
143, 13findfvcl 14253 1 |- (C e. om -> (A e. P -> (rec(G, A)` C) e. P))
Colors of variables: wff set class
Syntax hints:   -> wi 3   = wceq 1298   e. wcel 1300  (/)c0 2875  Oncon0 3657  suc csuc 3659  omcom 3949  ` cfv 3998  reccrdg 5139
This theorem is referenced by:  findabrcl 14255
This theorem was proved from axioms:  ax-1 4  ax-2 5  ax-3 6  ax-mp 7  ax-7 1304  ax-gen 1305  ax-8 1306  ax-9 1307  ax-10 1308  ax-11 1309  ax-12 1310  ax-13 1311  ax-14 1312  ax-17 1317  ax-4 1319  ax-5o 1321  ax-6o 1324  ax-9o 1481  ax-10o 1500  ax-16 1580  ax-11o 1588  ax-ext 1865  ax-rep 3428  ax-sep 3438  ax-nul 3445  ax-pow 3481  ax-pr 3524  ax-un 3790
This theorem depends on definitions:  df-bi 164  df-or 241  df-an 242  df-3or 859  df-3an 860  df-ex 1327  df-sb 1536  df-eu 1775  df-mo 1776  df-clab 1872  df-cleq 1877  df-clel 1880  df-ne 2019  df-ral 2109  df-rex 2110  df-rab 2112  df-v 2294  df-sbc 2454  df-dif 2597  df-un 2600  df-in 2603  df-ss 2605  df-pss 2607  df-nul 2876  df-if 2983  df-pw 3035  df-sn 3049  df-pr 3050  df-tp 3052  df-op 3053  df-uni 3178  df-iun 3257  df-br 3339  df-opab 3396  df-tr 3412  df-eprel 3583  df-id 3586  df-po 3591  df-so 3604  df-fr 3625  df-we 3644  df-ord 3660  df-on 3661  df-lim 3662  df-suc 3663  df-om 3950  df-xp 4000  df-rel 4001  df-cnv 4002  df-co 4003  df-dm 4004  df-rn 4005  df-res 4006  df-ima 4007  df-fun 4008  df-fn 4009  df-fv 4014  df-rdg 5140
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