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Theorem mp3an3an 1275
Description: mp3an 1269 with antecedents in standard conjunction form and with two hypotheses which are implications. (Contributed by Alan Sare, 28-Aug-2016.)
Hypotheses
Ref Expression
mp3an3an.1 𝜑
mp3an3an.2 (𝜓𝜒)
mp3an3an.3 (𝜃𝜏)
mp3an3an.4 ((𝜑𝜒𝜏) → 𝜂)
Assertion
Ref Expression
mp3an3an ((𝜓𝜃) → 𝜂)

Proof of Theorem mp3an3an
StepHypRef Expression
1 mp3an3an.2 . 2 (𝜓𝜒)
2 mp3an3an.3 . 2 (𝜃𝜏)
3 mp3an3an.1 . . 3 𝜑
4 mp3an3an.4 . . 3 ((𝜑𝜒𝜏) → 𝜂)
53, 4mp3an1 1256 . 2 ((𝜒𝜏) → 𝜂)
61, 2, 5syl2an 283 1 ((𝜓𝜃) → 𝜂)
Colors of variables: wff set class
Syntax hints:  wi 4  wa 102  w3a 920
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106
This theorem depends on definitions:  df-bi 115  df-3an 922
This theorem is referenced by:  mp3an2ani  1276
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