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Theorem ancl 529
Description: Conjoin antecedent to left of consequent. (Contributed by NM, 15-Aug-1994.)
Assertion
Ref Expression
ancl ((φψ) → (φ → (φ ψ)))

Proof of Theorem ancl
StepHypRef Expression
1 pm3.2 434 . 2 (φ → (ψ → (φ ψ)))
21a2i 12 1 ((φψ) → (φ → (φ ψ)))
Colors of variables: wff setvar class
Syntax hints:  wi 4   wa 358
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This theorem depends on definitions:  df-bi 177  df-an 360
This theorem is referenced by:  equs4  1959  eupickbi  2270
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