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Theorem ancl 316
Description: Conjoin antecedent to left of consequent. (Contributed by NM, 15-Aug-1994.)
Assertion
Ref Expression
ancl ((𝜑𝜓) → (𝜑 → (𝜑𝜓)))

Proof of Theorem ancl
StepHypRef Expression
1 pm3.2 138 . 2 (𝜑 → (𝜓 → (𝜑𝜓)))
21a2i 11 1 ((𝜑𝜓) → (𝜑 → (𝜑𝜓)))
Colors of variables: wff set class
Syntax hints:  wi 4  wa 103
This theorem was proved from axioms:  ax-mp 5  ax-2 7  ax-ia3 107
This theorem is referenced by:  equs4  1703  eupickbi  2079
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