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Theorem falxorfal 1444
Description: A \/_ identity. (Contributed by David A. Wheeler, 9-May-2015.)
Assertion
Ref Expression
falxorfal

Proof of Theorem falxorfal
StepHypRef Expression
1 df-xor 1364 . . 3
2 falbifal 1436 . . 3
31, 2xchbinx 310 . 2
4 nottru 1431 . 2
53, 4bitri 249 1
Colors of variables: wff setvar class
Syntax hints:  -.wn 3  <->wb 184  \/_wxo 1363   wtru 1396   wfal 1400
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-xor 1364  df-tru 1398  df-fal 1401
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