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Theorem sbcbii 2972
Description: Formula-building inference for class substitution. (Contributed by NM, 11-Nov-2005.)
Hypothesis
Ref Expression
sbcbii.1 (𝜑𝜓)
Assertion
Ref Expression
sbcbii ([𝐴 / 𝑥]𝜑[𝐴 / 𝑥]𝜓)

Proof of Theorem sbcbii
StepHypRef Expression
1 sbcbii.1 . . . 4 (𝜑𝜓)
21a1i 9 . . 3 (⊤ → (𝜑𝜓))
32sbcbidv 2971 . 2 (⊤ → ([𝐴 / 𝑥]𝜑[𝐴 / 𝑥]𝜓))
43mptru 1341 1 ([𝐴 / 𝑥]𝜑[𝐴 / 𝑥]𝜓)
Colors of variables: wff set class
Syntax hints:  wb 104  wtru 1333  [wsbc 2913
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-5 1424  ax-7 1425  ax-gen 1426  ax-ie1 1470  ax-ie2 1471  ax-8 1483  ax-11 1485  ax-4 1488  ax-17 1507  ax-i9 1511  ax-ial 1515  ax-i5r 1516  ax-ext 2122
This theorem depends on definitions:  df-bi 116  df-tru 1335  df-nf 1438  df-sb 1737  df-clab 2127  df-cleq 2133  df-clel 2136  df-sbc 2914
This theorem is referenced by:  eqsbc3r  2973  sbc3an  2974  sbccomlem  2987  sbccom  2988  sbcabel  2994  csbco  3017  sbcnel12g  3024  sbcne12g  3025  sbccsbg  3036  sbccsb2g  3037  csbnestgf  3057  csbabg  3066  sbcssg  3477  sbcrel  4633  difopab  4680  sbcfung  5155  f1od2  6140  mpoxopovel  6146  bezoutlemnewy  11720  bezoutlemstep  11721  bezoutlemmain  11722
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