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Theorem elmptrab2 23868
Description: Membership in a one-parameter class of sets, indexed by arbitrary base sets. (Contributed by Stefan O'Rear, 28-Jul-2015.) (Revised by AV, 26-Mar-2021.)
Hypotheses
Ref Expression
elmptrab2.f 𝐹 = (𝑥 ∈ V ↦ {𝑦𝐵𝜑})
elmptrab2.s1 ((𝑥 = 𝑋𝑦 = 𝑌) → (𝜑𝜓))
elmptrab2.s2 (𝑥 = 𝑋𝐵 = 𝐶)
elmptrab2.ex 𝐵 ∈ V
elmptrab2.rc (𝑌𝐶𝑋𝑊)
Assertion
Ref Expression
elmptrab2 (𝑌 ∈ (𝐹𝑋) ↔ (𝑌𝐶𝜓))
Distinct variable groups:   𝑥,𝑦,𝜓   𝑥,𝑋,𝑦   𝑥,𝑌,𝑦   𝑥,𝐶,𝑦   𝑥,𝑊,𝑦   𝑦,𝐵
Allowed substitution hints:   𝜑(𝑥,𝑦)   𝐵(𝑥)   𝐹(𝑥,𝑦)

Proof of Theorem elmptrab2
StepHypRef Expression
1 elmptrab2.f . . 3 𝐹 = (𝑥 ∈ V ↦ {𝑦𝐵𝜑})
2 elmptrab2.s1 . . 3 ((𝑥 = 𝑋𝑦 = 𝑌) → (𝜑𝜓))
3 elmptrab2.s2 . . 3 (𝑥 = 𝑋𝐵 = 𝐶)
4 elmptrab2.ex . . . 4 𝐵 ∈ V
54a1i 11 . . 3 (𝑥 ∈ V → 𝐵 ∈ V)
61, 2, 3, 5elmptrab 23867 . 2 (𝑌 ∈ (𝐹𝑋) ↔ (𝑋 ∈ V ∧ 𝑌𝐶𝜓))
7 3simpc 1162 . . 3 ((𝑋 ∈ V ∧ 𝑌𝐶𝜓) → (𝑌𝐶𝜓))
8 elmptrab2.rc . . . . . 6 (𝑌𝐶𝑋𝑊)
98elexd 3476 . . . . 5 (𝑌𝐶𝑋 ∈ V)
109adantr 484 . . . 4 ((𝑌𝐶𝜓) → 𝑋 ∈ V)
11 simpl 486 . . . 4 ((𝑌𝐶𝜓) → 𝑌𝐶)
12 simpr 488 . . . 4 ((𝑌𝐶𝜓) → 𝜓)
1310, 11, 123jca 1140 . . 3 ((𝑌𝐶𝜓) → (𝑋 ∈ V ∧ 𝑌𝐶𝜓))
147, 13impbii 211 . 2 ((𝑋 ∈ V ∧ 𝑌𝐶𝜓) ↔ (𝑌𝐶𝜓))
156, 14bitri 277 1 (𝑌 ∈ (𝐹𝑋) ↔ (𝑌𝐶𝜓))
Colors of variables: wff setvar class
Syntax hints:  wi 4  wb 208  wa 399  w3a 1097   = wceq 1559  wcel 2141  {crab 3413  Vcvv 3453  cmpt 5180  cfv 6517
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1814  ax-4 1828  ax-5 1929  ax-6 1986  ax-7 2027  ax-8 2143  ax-9 2151  ax-10 2174  ax-11 2190  ax-12 2211  ax-ext 2733  ax-sep 5245  ax-nul 5255  ax-pr 5389
This theorem depends on definitions:  df-bi 209  df-an 400  df-or 859  df-3an 1099  df-tru 1562  df-fal 1572  df-ex 1799  df-nf 1803  df-sb 2090  df-mo 2565  df-eu 2595  df-clab 2740  df-cleq 2753  df-clel 2836  df-nfc 2910  df-ne 2957  df-ral 3076  df-rex 3086  df-rab 3414  df-v 3455  df-sbc 3745  df-csb 3853  df-dif 3907  df-un 3909  df-in 3911  df-ss 3921  df-nul 4286  df-if 4480  df-pw 4556  df-sn 4582  df-pr 4584  df-op 4588  df-uni 4865  df-br 5100  df-opab 5162  df-mpt 5181  df-id 5540  df-xp 5651  df-rel 5652  df-cnv 5653  df-co 5654  df-dm 5655  df-rn 5656  df-res 5657  df-ima 5658  df-iota 6473  df-fun 6519  df-fv 6525
This theorem is referenced by:  isfil  23887  isufil  23943
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