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Theorem anc2l 555
Description: Conjoin antecedent to left of consequent in nested implication. (Contributed by NM, 10-Aug-1994.) (Proof shortened by Wolf Lammen, 14-Jul-2013.)
Ref Expression

Proof of Theorem anc2l
StepHypRef Expression
1 pm5.42 548 . 2
21biimpi 194 1
Colors of variables: wff setvar class
Syntax hints:  ->wi 4  /\wa 369
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 185  df-an 371
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