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Theorem mpan2i 427
Description: An inference based on modus ponens. (Contributed by NM, 10-Apr-1994.) (Proof shortened by Wolf Lammen, 19-Nov-2012.)
Hypotheses
Ref Expression
mpan2i.1 𝜒
mpan2i.2 (𝜑 → ((𝜓𝜒) → 𝜃))
Assertion
Ref Expression
mpan2i (𝜑 → (𝜓𝜃))

Proof of Theorem mpan2i
StepHypRef Expression
1 mpan2i.1 . . 3 𝜒
21a1i 9 . 2 (𝜑𝜒)
3 mpan2i.2 . 2 (𝜑 → ((𝜓𝜒) → 𝜃))
42, 3mpan2d 424 1 (𝜑 → (𝜓𝜃))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 103
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia3 107
This theorem is referenced by:  sincosq1lem  12833
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