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Theorem fvmptd2f 7013
Description: Alternate deduction version of fvmpt 6996, suitable for iteration. (Contributed by Mario Carneiro, 7-Jan-2017.) (Proof shortened by AV, 19-Jan-2022.)
Hypotheses
Ref Expression
fvmptd2f.1 (𝜑𝐴𝐷)
fvmptd2f.2 ((𝜑𝑥 = 𝐴) → 𝐵𝑉)
fvmptd2f.3 ((𝜑𝑥 = 𝐴) → ((𝐹𝐴) = 𝐵𝜓))
fvmptd2f.4 𝑥𝐹
fvmptd2f.5 𝑥𝜓
Assertion
Ref Expression
fvmptd2f (𝜑 → (𝐹 = (𝑥𝐷𝐵) → 𝜓))
Distinct variable groups:   𝑥,𝐴   𝑥,𝐷   𝜑,𝑥
Allowed substitution hints:   𝜓(𝑥)   𝐵(𝑥)   𝐹(𝑥)   𝑉(𝑥)

Proof of Theorem fvmptd2f
StepHypRef Expression
1 fvmptd2f.1 . 2 (𝜑𝐴𝐷)
2 fvmptd2f.2 . 2 ((𝜑𝑥 = 𝐴) → 𝐵𝑉)
3 fvmptd2f.3 . 2 ((𝜑𝑥 = 𝐴) → ((𝐹𝐴) = 𝐵𝜓))
4 fvmptd2f.4 . 2 𝑥𝐹
5 fvmptd2f.5 . 2 𝑥𝜓
6 nfv 1947 . 2 𝑥𝜑
71, 2, 3, 4, 5, 6fvmptd3f 7012 1 (𝜑 → (𝐹 = (𝑥𝐷𝐵) → 𝜓))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:  wi 4  wa 401   = wceq 1570  wnf 1816  wcel 2146  wnfc 2913  cmpt 5197  cfv 6543
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1828  ax-4 1842  ax-5 1943  ax-6 2000  ax-7 2041  ax-8 2148  ax-9 2156  ax-10 2179  ax-11 2195  ax-12 2216  ax-ext 2738  ax-sep 5262  ax-nul 5274  ax-pr 5409
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-nf 1817  df-sb 2100  df-mo 2570  df-eu 2600  df-clab 2745  df-cleq 2758  df-clel 2841  df-nfc 2915  df-ne 2962  df-ral 3083  df-rex 3093  df-rab 3420  df-v 3460  df-sbc 3748  df-csb 3857  df-dif 3911  df-un 3913  df-in 3915  df-ss 3925  df-nul 4290  df-if 4493  df-sn 4595  df-pr 4597  df-op 4601  df-uni 4878  df-br 5115  df-opab 5179  df-mpt 5198  df-id 5561  df-xp 5672  df-rel 5673  df-cnv 5674  df-co 5675  df-dm 5676  df-rn 5677  df-res 5678  df-ima 5679  df-iota 6499  df-fun 6545  df-fv 6551
This theorem is used by:  fvmptdv  7014  yonedalem4b  18357
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