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Syntax Definition w3nand 31060
Description: The double nand.
Hypotheses
Ref Expression
wph  wff  ph
wps  wff  ps
wch  wff  ch
Assertion
Ref Expression
w3nand  wff  ( ph  -/\ 
ps  -/\  ch )

See definition df-3nand 31061 for more information.

Colors of variables: wff setvar class
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