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Theorem findreccl 32091
Description: Please add description here. (Contributed by Jeff Hoffman, 19-Feb-2008.)
Hypothesis
Ref Expression
findreccl.1 (𝑧𝑃 → (𝐺𝑧) ∈ 𝑃)
Assertion
Ref Expression
findreccl (𝐶 ∈ ω → (𝐴𝑃 → (rec(𝐺, 𝐴)‘𝐶) ∈ 𝑃))
Distinct variable groups:   𝑧,𝐺   𝑧,𝐴   𝑧,𝑃
Allowed substitution hint:   𝐶(𝑧)

Proof of Theorem findreccl
Dummy variable 𝑦 is distinct from all other variables.
StepHypRef Expression
1 rdg0g 7468 . . 3 (𝐴𝑃 → (rec(𝐺, 𝐴)‘∅) = 𝐴)
2 eleq1a 2693 . . 3 (𝐴𝑃 → ((rec(𝐺, 𝐴)‘∅) = 𝐴 → (rec(𝐺, 𝐴)‘∅) ∈ 𝑃))
31, 2mpd 15 . 2 (𝐴𝑃 → (rec(𝐺, 𝐴)‘∅) ∈ 𝑃)
4 nnon 7018 . . . 4 (𝑦 ∈ ω → 𝑦 ∈ On)
5 fveq2 6148 . . . . . . 7 (𝑧 = (rec(𝐺, 𝐴)‘𝑦) → (𝐺𝑧) = (𝐺‘(rec(𝐺, 𝐴)‘𝑦)))
65eleq1d 2683 . . . . . 6 (𝑧 = (rec(𝐺, 𝐴)‘𝑦) → ((𝐺𝑧) ∈ 𝑃 ↔ (𝐺‘(rec(𝐺, 𝐴)‘𝑦)) ∈ 𝑃))
7 findreccl.1 . . . . . 6 (𝑧𝑃 → (𝐺𝑧) ∈ 𝑃)
86, 7vtoclga 3258 . . . . 5 ((rec(𝐺, 𝐴)‘𝑦) ∈ 𝑃 → (𝐺‘(rec(𝐺, 𝐴)‘𝑦)) ∈ 𝑃)
9 rdgsuc 7465 . . . . . 6 (𝑦 ∈ On → (rec(𝐺, 𝐴)‘suc 𝑦) = (𝐺‘(rec(𝐺, 𝐴)‘𝑦)))
109eleq1d 2683 . . . . 5 (𝑦 ∈ On → ((rec(𝐺, 𝐴)‘suc 𝑦) ∈ 𝑃 ↔ (𝐺‘(rec(𝐺, 𝐴)‘𝑦)) ∈ 𝑃))
118, 10syl5ibr 236 . . . 4 (𝑦 ∈ On → ((rec(𝐺, 𝐴)‘𝑦) ∈ 𝑃 → (rec(𝐺, 𝐴)‘suc 𝑦) ∈ 𝑃))
124, 11syl 17 . . 3 (𝑦 ∈ ω → ((rec(𝐺, 𝐴)‘𝑦) ∈ 𝑃 → (rec(𝐺, 𝐴)‘suc 𝑦) ∈ 𝑃))
1312a1d 25 . 2 (𝑦 ∈ ω → (𝐴𝑃 → ((rec(𝐺, 𝐴)‘𝑦) ∈ 𝑃 → (rec(𝐺, 𝐴)‘suc 𝑦) ∈ 𝑃)))
143, 13findfvcl 32090 1 (𝐶 ∈ ω → (𝐴𝑃 → (rec(𝐺, 𝐴)‘𝐶) ∈ 𝑃))
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1480  wcel 1987  c0 3891  Oncon0 5682  suc csuc 5684  cfv 5847  ωcom 7012  reccrdg 7450
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1719  ax-4 1734  ax-5 1836  ax-6 1885  ax-7 1932  ax-8 1989  ax-9 1996  ax-10 2016  ax-11 2031  ax-12 2044  ax-13 2245  ax-ext 2601  ax-rep 4731  ax-sep 4741  ax-nul 4749  ax-pow 4803  ax-pr 4867  ax-un 6902
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3or 1037  df-3an 1038  df-tru 1483  df-ex 1702  df-nf 1707  df-sb 1878  df-eu 2473  df-mo 2474  df-clab 2608  df-cleq 2614  df-clel 2617  df-nfc 2750  df-ne 2791  df-ral 2912  df-rex 2913  df-reu 2914  df-rab 2916  df-v 3188  df-sbc 3418  df-csb 3515  df-dif 3558  df-un 3560  df-in 3562  df-ss 3569  df-pss 3571  df-nul 3892  df-if 4059  df-pw 4132  df-sn 4149  df-pr 4151  df-tp 4153  df-op 4155  df-uni 4403  df-iun 4487  df-br 4614  df-opab 4674  df-mpt 4675  df-tr 4713  df-eprel 4985  df-id 4989  df-po 4995  df-so 4996  df-fr 5033  df-we 5035  df-xp 5080  df-rel 5081  df-cnv 5082  df-co 5083  df-dm 5084  df-rn 5085  df-res 5086  df-ima 5087  df-pred 5639  df-ord 5685  df-on 5686  df-lim 5687  df-suc 5688  df-iota 5810  df-fun 5849  df-fn 5850  df-f 5851  df-f1 5852  df-fo 5853  df-f1o 5854  df-fv 5855  df-om 7013  df-wrecs 7352  df-recs 7413  df-rdg 7451
This theorem is referenced by:  findabrcl  32092
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