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Syntax Definition wnan 1438
Description: Extend wff definition to include alternative denial ('nand').
Hypotheses
Ref Expression
wph wff 𝜑
wps wff 𝜓
Assertion
Ref Expression
wnan wff (𝜑𝜓)

See definition df-nan 1439 for more information.

Colors of variables: wff setvar class
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