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Theorem abai 795
Description: Introduce one conjunct as an antecedent to the other. "abai" stands for "and, biconditional, and, implication". (Contributed by NM, 12-Aug-1993.) (Proof shortened by Wolf Lammen, 7-Dec-2012.)
Assertion
Ref Expression
abai

Proof of Theorem abai
StepHypRef Expression
1 biimt 335 . 2
21pm5.32i 637 1
Colors of variables: wff setvar class
Syntax hints:  ->wi 4  <->wb 184  /\wa 369
This theorem is referenced by:  sbequ8  1744  eu5  2310  2eu6OLD  2384  r19.29imd  2994  dfss4  3731  choc0  26244
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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