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Theorem r19.29a 2607
Description: A commonly used pattern based on r19.29 2601. (Contributed by Thierry Arnoux, 22-Nov-2017.)
Hypotheses
Ref Expression
r19.29a.1 (((𝜑𝑥𝐴) ∧ 𝜓) → 𝜒)
r19.29a.2 (𝜑 → ∃𝑥𝐴 𝜓)
Assertion
Ref Expression
r19.29a (𝜑𝜒)
Distinct variable groups:   𝜒,𝑥   𝜑,𝑥
Allowed substitution hints:   𝜓(𝑥)   𝐴(𝑥)

Proof of Theorem r19.29a
StepHypRef Expression
1 nfv 1515 . 2 𝑥𝜑
2 r19.29a.1 . 2 (((𝜑𝑥𝐴) ∧ 𝜓) → 𝜒)
3 r19.29a.2 . 2 (𝜑 → ∃𝑥𝐴 𝜓)
41, 2, 3r19.29af 2605 1 (𝜑𝜒)
Colors of variables: wff set class
Syntax hints:  wi 4  wa 103  wcel 2135  wrex 2443
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 1434  ax-gen 1436  ax-ie1 1480  ax-ie2 1481  ax-4 1497  ax-17 1513  ax-ial 1521  ax-i5r 1522
This theorem depends on definitions:  df-bi 116  df-tru 1345  df-nf 1448  df-ral 2447  df-rex 2448
This theorem is referenced by:  cnegexlem3  8067  cnegex  8068  modqmuladdnn0  10294  uzwodc  11959  1arith  12286  neitx  12835
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