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Theorem lem3.3.7i4e3 1071
Description: Equation 3.7 of [PavMeg1999] p. 9. The variable i in the paper is set to 4, and this is the third part of the equation. (Contributed by Roy F. Longton, 3-Jul-05.)
Assertion
Ref Expression
lem3.3.7i4e3 (a ->4 (a ^ b)) = (a ->1 b)

Proof of Theorem lem3.3.7i4e3
StepHypRef Expression
1 nom14 311 1 (a ->4 (a ^ b)) = (a ->1 b)
Colors of variables: term
Syntax hints:   = wb 1   ^ wa 7   ->1 wi1 12   ->4 wi4 15
This theorem was proved from axioms:  ax-a1 30  ax-a2 31  ax-a3 32  ax-a5 34  ax-r1 35  ax-r2 36  ax-r4 37  ax-r5 38
This theorem depends on definitions:  df-a 40  df-t 41  df-f 42  df-i1 44  df-i4 47  df-le1 130  df-le2 131
This theorem is referenced by: (None)
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