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Theorem frpoins3g 6318
Description: Well-Founded Induction schema, using implicit substitution. (Contributed by Scott Fenton, 19-Aug-2024.)
Hypotheses
Ref Expression
frpoins3g.1 (𝑥𝐴 → (∀𝑦 ∈ Pred (𝑅, 𝐴, 𝑥)𝜓𝜑))
frpoins3g.2 (𝑥 = 𝑦 → (𝜑𝜓))
frpoins3g.3 (𝑥 = 𝐵 → (𝜑𝜒))
Assertion
Ref Expression
frpoins3g (((𝑅 Fr 𝐴𝑅 Po 𝐴𝑅 Se 𝐴) ∧ 𝐵𝐴) → 𝜒)
Distinct variable groups:   𝑥,𝐴,𝑦   𝑥,𝐵   𝜒,𝑥   𝜑,𝑦   𝜓,𝑥   𝑥,𝑅,𝑦
Allowed substitution hints:   𝜑(𝑥)   𝜓(𝑦)   𝜒(𝑦)   𝐵(𝑦)

Proof of Theorem frpoins3g
StepHypRef Expression
1 frpoins3g.1 . . 3 (𝑥𝐴 → (∀𝑦 ∈ Pred (𝑅, 𝐴, 𝑥)𝜓𝜑))
2 frpoins3g.2 . . 3 (𝑥 = 𝑦 → (𝜑𝜓))
31, 2frpoins2g 6317 . 2 ((𝑅 Fr 𝐴𝑅 Po 𝐴𝑅 Se 𝐴) → ∀𝑥𝐴 𝜑)
4 frpoins3g.3 . . 3 (𝑥 = 𝐵 → (𝜑𝜒))
54rspccva 3571 . 2 ((∀𝑥𝐴 𝜑𝐵𝐴) → 𝜒)
63, 5sylan 588 1 (((𝑅 Fr 𝐴𝑅 Po 𝐴𝑅 Se 𝐴) ∧ 𝐵𝐴) → 𝜒)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 208  wa 398  w3a 1095   = wceq 1550  wcel 2132  wral 3066   Po wpo 5542   Fr wfr 5586   Se wse 5587  Predcpred 6272
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1805  ax-4 1819  ax-5 1920  ax-6 1977  ax-7 2018  ax-8 2134  ax-9 2142  ax-10 2165  ax-11 2181  ax-12 2202  ax-ext 2724  ax-sep 5236  ax-pr 5380
This theorem depends on definitions:  df-bi 209  df-an 399  df-or 857  df-3an 1097  df-tru 1553  df-fal 1563  df-ex 1790  df-nf 1794  df-sb 2081  df-clab 2731  df-cleq 2744  df-clel 2827  df-nfc 2901  df-ne 2948  df-ral 3067  df-rex 3077  df-rab 3405  df-v 3446  df-sbc 3736  df-dif 3898  df-un 3900  df-in 3902  df-ss 3912  df-nul 4277  df-if 4471  df-pw 4547  df-sn 4573  df-pr 4575  df-op 4579  df-br 5091  df-opab 5153  df-po 5544  df-fr 5589  df-se 5590  df-xp 5642  df-cnv 5644  df-dm 5646  df-rn 5647  df-res 5648  df-ima 5649  df-pred 6273
This theorem is referenced by:  noinds  28004
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