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Theorem findfvcl 37418
Description: Please add description here. (Contributed by Jeff Hoffman, 12-Feb-2008.)
Hypotheses
Ref Expression
findfvcl.1 (𝜑 → (𝐹‘∅) ∈ 𝑃)
findfvcl.2 (𝑦 ∈ ω → (𝜑 → ((𝐹‘𝑦) ∈ 𝑃 → (𝐹‘suc 𝑦) ∈ 𝑃)))
Assertion
Ref Expression
findfvcl (𝐴 ∈ ω → (𝜑 → (𝐹‘𝐴) ∈ 𝑃))
Distinct variable groups:   𝑦,𝐹   𝑦,𝑃   𝜑,𝑦
Allowed substitution hint:   𝐴(𝑦)

Proof of Theorem findfvcl
Dummy variable 𝑥 is distinct from all other variables.
StepHypRef Expression
1 fveleq 37417 . 2 (𝑥 = ∅ → ((𝜑 → (𝐹‘𝑥) ∈ 𝑃) ↔ (𝜑 → (𝐹‘∅) ∈ 𝑃)))
2 fveleq 37417 . 2 (𝑥 = 𝑦 → ((𝜑 → (𝐹‘𝑥) ∈ 𝑃) ↔ (𝜑 → (𝐹‘𝑦) ∈ 𝑃)))
3 fveleq 37417 . 2 (𝑥 = suc 𝑦 → ((𝜑 → (𝐹‘𝑥) ∈ 𝑃) ↔ (𝜑 → (𝐹‘suc 𝑦) ∈ 𝑃)))
4 fveleq 37417 . 2 (𝑥 = 𝐴 → ((𝜑 → (𝐹‘𝑥) ∈ 𝑃) ↔ (𝜑 → (𝐹‘𝐴) ∈ 𝑃)))
5 findfvcl.1 . 2 (𝜑 → (𝐹‘∅) ∈ 𝑃)
6 findfvcl.2 . . 3 (𝑦 ∈ ω → (𝜑 → ((𝐹‘𝑦) ∈ 𝑃 → (𝐹‘suc 𝑦) ∈ 𝑃)))
76a2d 30 . 2 (𝑦 ∈ ω → ((𝜑 → (𝐹‘𝑦) ∈ 𝑃) → (𝜑 → (𝐹‘suc 𝑦) ∈ 𝑃)))
81, 2, 3, 4, 5, 7finds 7932 1 (𝐴 ∈ ω → (𝜑 → (𝐹‘𝐴) ∈ 𝑃))
Colors of variables:    wff setvar class
This proof depends on syntax axioms:   → wi 4   ∈ wcel 2147  ∅c0 4281  suc csuc 6382  ‘cfv 6558  ωcom 7901
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 1945  ax-6 2002  ax-7 2043  ax-8 2149  ax-9 2157  ax-ext 2735  ax-sep 5252  ax-nul 5263  ax-pr 5395  ax-un 7775
This proof depends on definitions:  df-bi 210  df-an 402  df-or 862  df-3or 1104  df-3an 1105  df-tru 1573  df-fal 1583  df-ex 1813  df-sb 2102  df-clab 2742  df-cleq 2755  df-clel 2839  df-ne 2960  df-ral 3081  df-rex 3091  df-rab 3417  df-v 3456  df-ss 3901  df-pss 4017  df-dif 4050  df-in 4094  df-un 4154  df-nul 4282  df-if 4486  df-pw 4562  df-sn 4589  df-pr 4591  df-op 4839  df-uni 4871  df-br 5107  df-opab 5171  df-tr 5216  df-eprel 5555  df-po 5563  df-so 5564  df-fr 5608  df-we 5610  df-ord 6383  df-on 6384  df-lim 6385  df-suc 6386  df-iota 6512  df-fv 6566  df-om 7902
This theorem is used by:  findreccl  37419
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