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Theorem wa1 191
Description: Weak A1.
Assertion
Ref Expression
wa1 (a == a'') = 1

Proof of Theorem wa1
StepHypRef Expression
1 ax-a1 30 . 2 a = a''
21bi1 118 1 (a == a'') = 1
Colors of variables: term
Syntax hints:   = wb 1  'wn 4   == tb 5  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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