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Theorem tfr1ALT 8215
Description: Alternate proof of tfr1 8212 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 7616 . 2 E We On
2 epse 5571 . 2 E Se On
3 tfrALT.1 . . . 4 𝐹 = recs(𝐺)
4 df-recs 8186 . . . 4 recs(𝐺) = wrecs( E , On, 𝐺)
53, 4eqtri 2767 . . 3 𝐹 = wrecs( E , On, 𝐺)
65wfr1 8150 . 2 (( E We On ∧ E Se On) → 𝐹 Fn On)
71, 2, 6mp2an 688 1 𝐹 Fn On
Colors of variables: wff setvar class
Syntax hints:   = wceq 1541   E cep 5493   Se wse 5541   We wwe 5542  Oncon0 6263   Fn wfn 6425  wrecscwrecs 8111  recscrecs 8185
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1801  ax-4 1815  ax-5 1916  ax-6 1974  ax-7 2014  ax-8 2111  ax-9 2119  ax-10 2140  ax-11 2157  ax-12 2174  ax-ext 2710  ax-rep 5213  ax-sep 5226  ax-nul 5233  ax-pr 5355  ax-un 7579
This theorem depends on definitions:  df-bi 206  df-an 396  df-or 844  df-3or 1086  df-3an 1087  df-tru 1544  df-fal 1554  df-ex 1786  df-nf 1790  df-sb 2071  df-mo 2541  df-eu 2570  df-clab 2717  df-cleq 2731  df-clel 2817  df-nfc 2890  df-ne 2945  df-ral 3070  df-rex 3071  df-reu 3072  df-rab 3074  df-v 3432  df-sbc 3720  df-csb 3837  df-dif 3894  df-un 3896  df-in 3898  df-ss 3908  df-pss 3910  df-nul 4262  df-if 4465  df-pw 4540  df-sn 4567  df-pr 4569  df-tp 4571  df-op 4573  df-uni 4845  df-iun 4931  df-br 5079  df-opab 5141  df-mpt 5162  df-tr 5196  df-id 5488  df-eprel 5494  df-po 5502  df-so 5503  df-fr 5543  df-se 5544  df-we 5545  df-xp 5594  df-rel 5595  df-cnv 5596  df-co 5597  df-dm 5598  df-rn 5599  df-res 5600  df-ima 5601  df-pred 6199  df-ord 6266  df-on 6267  df-iota 6388  df-fun 6432  df-fn 6433  df-f 6434  df-f1 6435  df-fo 6436  df-f1o 6437  df-fv 6438  df-ov 7271  df-frecs 8081  df-wrecs 8112  df-recs 8186
This theorem is referenced by: (None)
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