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Theorem frpoins3g 6333
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 6332 . 2 ((𝑅 Fr 𝐴𝑅 Po 𝐴𝑅 Se 𝐴) → ∀𝑥𝐴 𝜑)
4 frpoins3g.3 . . 3 (𝑥 = 𝐵 → (𝜑𝜒))
54rspccva 3581 . 2 ((∀𝑥𝐴 𝜑𝐵𝐴) → 𝜒)
63, 5sylan 589 1 (((𝑅 Fr 𝐴𝑅 Po 𝐴𝑅 Se 𝐴) ∧ 𝐵𝐴) → 𝜒)
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 208  wa 399  w3a 1099   = wceq 1561  wcel 2143  wral 3077   Po wpo 5554   Fr wfr 5598   Se wse 5599  Predcpred 6287
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1816  ax-4 1830  ax-5 1931  ax-6 1988  ax-7 2029  ax-8 2145  ax-9 2153  ax-10 2176  ax-11 2192  ax-12 2213  ax-ext 2735  ax-sep 5247  ax-pr 5391
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1101  df-tru 1564  df-fal 1574  df-ex 1801  df-nf 1805  df-sb 2092  df-clab 2742  df-cleq 2755  df-clel 2838  df-nfc 2912  df-ne 2959  df-ral 3078  df-rex 3088  df-rab 3416  df-v 3457  df-sbc 3746  df-dif 3908  df-un 3910  df-in 3912  df-ss 3922  df-nul 4287  df-if 4482  df-pw 4558  df-sn 4584  df-pr 4586  df-op 4590  df-br 5102  df-opab 5164  df-po 5556  df-fr 5601  df-se 5602  df-xp 5654  df-cnv 5656  df-dm 5658  df-rn 5659  df-res 5660  df-ima 5661  df-pred 6288
This theorem is referenced by:  noinds  28045
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