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Theorem tfr1ALT 8329
Description: Alternate proof of tfr1 8326 using well-ordered recursion. (Contributed by Scott Fenton, 3-Aug-2020.) (New usage is discouraged.) (Proof modification is discouraged.)
Hypothesis
Ref Expression
tfrALT.1 𝐹 = recs(𝐺)
Assertion
Ref Expression
tfr1ALT 𝐹 Fn On

Proof of Theorem tfr1ALT
StepHypRef Expression
1 epweon 7718 . 2 E We On
2 epse 5604 . 2 E Se On
3 tfrALT.1 . . . 4 𝐹 = recs(𝐺)
4 df-recs 8301 . . . 4 recs(𝐺) = wrecs( E , On, 𝐺)
53, 4eqtri 2757 . . 3 𝐹 = wrecs( E , On, 𝐺)
65wfr1 8266 . 2 (( E We On ∧ E Se On) → 𝐹 Fn On)
71, 2, 6mp2an 692 1 𝐹 Fn On
Colors of variables: wff setvar class
Syntax hints:   = wceq 1541   E cep 5521   Se wse 5573   We wwe 5574  Oncon0 6315   Fn wfn 6485  wrecscwrecs 8251  recscrecs 8300
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1796  ax-4 1810  ax-5 1911  ax-6 1968  ax-7 2009  ax-8 2115  ax-9 2123  ax-10 2146  ax-11 2162  ax-12 2182  ax-ext 2706  ax-rep 5222  ax-sep 5239  ax-nul 5249  ax-pr 5375  ax-un 7678
This theorem depends on definitions:  df-bi 207  df-an 396  df-or 848  df-3or 1087  df-3an 1088  df-tru 1544  df-fal 1554  df-ex 1781  df-nf 1785  df-sb 2068  df-mo 2537  df-eu 2567  df-clab 2713  df-cleq 2726  df-clel 2809  df-nfc 2883  df-ne 2931  df-ral 3050  df-rex 3059  df-reu 3349  df-rab 3398  df-v 3440  df-sbc 3739  df-csb 3848  df-dif 3902  df-un 3904  df-in 3906  df-ss 3916  df-pss 3919  df-nul 4284  df-if 4478  df-pw 4554  df-sn 4579  df-pr 4581  df-op 4585  df-uni 4862  df-iun 4946  df-br 5097  df-opab 5159  df-mpt 5178  df-tr 5204  df-id 5517  df-eprel 5522  df-po 5530  df-so 5531  df-fr 5575  df-se 5576  df-we 5577  df-xp 5628  df-rel 5629  df-cnv 5630  df-co 5631  df-dm 5632  df-rn 5633  df-res 5634  df-ima 5635  df-pred 6257  df-ord 6318  df-on 6319  df-iota 6446  df-fun 6492  df-fn 6493  df-f 6494  df-f1 6495  df-fo 6496  df-f1o 6497  df-fv 6498  df-ov 7359  df-frecs 8221  df-wrecs 8252  df-recs 8301
This theorem is referenced by: (None)
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