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Theorem ssopab2i 4420
Description: Inference of ordered pair abstraction subclass from implication. (Contributed by NM, 5-Apr-1995.)
Hypothesis
Ref Expression
ssopab2i.1 (𝜑𝜓)
Assertion
Ref Expression
ssopab2i {⟨𝑥, 𝑦⟩ ∣ 𝜑} ⊆ {⟨𝑥, 𝑦⟩ ∣ 𝜓}

Proof of Theorem ssopab2i
StepHypRef Expression
1 ssopab2 4418 . 2 (∀𝑥𝑦(𝜑𝜓) → {⟨𝑥, 𝑦⟩ ∣ 𝜑} ⊆ {⟨𝑥, 𝑦⟩ ∣ 𝜓})
2 ssopab2i.1 . . 3 (𝜑𝜓)
32ax-gen 1502 . 2 𝑦(𝜑𝜓)
41, 3mpg 1504 1 {⟨𝑥, 𝑦⟩ ∣ 𝜑} ⊆ {⟨𝑥, 𝑦⟩ ∣ 𝜓}
Colors of variables:    wff set class
This proof depends on syntax axioms:  wi 4  wal 1400  wss 3220  {copab 4191
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This proof depends on definitions:  df-bi 117  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-in 3226  df-ss 3233  df-opab 4193
This theorem is used by:  elopabran  4426  brab2a  4828  opabssxp  4849  relopabiv  4903  funopab4  5414  ssoprab2i  6177  npsspw  7838  eqgfval  14025  trlsex  16628  eupthsg  16686
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