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Theorem syldc 46
Description: Syllogism deduction. Commuted form of syld 45. (Contributed by BJ, 25-Oct-2021.)
Hypotheses
Ref Expression
syld.1 (𝜑 → (𝜓𝜒))
syld.2 (𝜑 → (𝜒𝜃))
Assertion
Ref Expression
syldc (𝜓 → (𝜑𝜃))

Proof of Theorem syldc
StepHypRef Expression
1 syld.1 . . 3 (𝜑 → (𝜓𝜒))
2 syld.2 . . 3 (𝜑 → (𝜒𝜃))
31, 2syld 45 . 2 (𝜑 → (𝜓𝜃))
43com12 30 1 (𝜓 → (𝜑𝜃))
Colors of variables: wff set class
Syntax hints:  wi 4
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7
This theorem is referenced by: (None)
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