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Theorem wa5 195
Description: Weak A5.
Assertion
Ref Expression
wa5 ((a v (a' v b')') == a) = 1

Proof of Theorem wa5
StepHypRef Expression
1 ax-a5 34 . 2 (a v (a' v b')') = a
21bi1 118 1 ((a v (a' v b')') == a) = 1
Colors of variables: term
Syntax hints:   = wb 1  'wn 4   == tb 5   v wo 6  1wt 8
This theorem was proved from axioms:  ax-a1 30  ax-a2 31  ax-a5 34  ax-r1 35  ax-r2 36  ax-r4 37  ax-r5 38
This theorem depends on definitions:  df-b 39  df-a 40  df-t 41  df-f 42
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