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Theorem lem4.6.2e2 1083
Description: Equation 4.10 of [MegPav2000] p. 23. This is the second part of the equation. (Contributed by Roy F. Longton, 1-Jul-2005.)
Assertion
Ref Expression
lem4.6.2e2 ((a1 b) ∩ b) = ((ab) ∪ (ab))

Proof of Theorem lem4.6.2e2
StepHypRef Expression
1 u1lemab 610 1 ((a1 b) ∩ b) = ((ab) ∪ (ab))
Colors of variables: term
Syntax hints:   = wb 1   wn 4  wo 6  wa 7  1 wi1 12
This theorem was proved from axioms:  ax-a1 30  ax-a2 31  ax-a3 32  ax-a4 33  ax-a5 34  ax-r1 35  ax-r2 36  ax-r4 37  ax-r5 38  ax-r3 439
This theorem depends on definitions:  df-b 39  df-a 40  df-t 41  df-f 42  df-i1 44  df-le1 130  df-le2 131  df-c1 132  df-c2 133
This theorem is referenced by: (None)
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