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Theorem xorneg2 1312
Description:  \/_ is negated under negation of one argument. (Contributed by Mario Carneiro, 4-Sep-2016.)
Assertion
Ref Expression
xorneg2  \/_  \/_

Proof of Theorem xorneg2
StepHypRef Expression
1 xorneg1 1311 . 2  \/_  \/_
2 xorcom 1307 . 2  \/_  \/_
3 xorcom 1307 . . 3  \/_ 
\/_
43notbii 287 . 2  \/_  \/_
51, 2, 43bitr4i 268 1  \/_  \/_
Colors of variables: wff setvar class
Syntax hints:   wn 3   wb 176    \/_ wxo 1304
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 177  df-xor 1305
This theorem is referenced by:  xorneg  1313  hadnot  1393
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