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Theorem truxorfal 1308
Description: A  \/_ identity. (Contributed by David A. Wheeler, 2-Mar-2018.)
Assertion
Ref Expression
truxorfal  \/_

Proof of Theorem truxorfal
StepHypRef Expression
1 df-xor 1266 . 2  \/_
2 truorfal 1294 . . 3
3 notfal 1302 . . . 4
4 truan 1259 . . . 4
53, 4xchnxbir 605 . . 3
62, 5anbi12i 433 . 2
7 anidm 376 . 2
81, 6, 73bitri 195 1  \/_
Colors of variables: wff set class
Syntax hints:   wn 3   wa 97   wb 98   wo 628   wtru 1243   wfal 1247    \/_ wxo 1265
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-in1 544  ax-in2 545  ax-io 629
This theorem depends on definitions:  df-bi 110  df-tru 1245  df-fal 1248  df-xor 1266
This theorem is referenced by: (None)
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