wnan - Metamath Proof Explorer

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Syntax Definition wnan 1483

Description: Extend wff definition to include alternative denial ("nand").

**Hypotheses**
Ref	Expression
wph	wff 𝜑
wps	wff 𝜓

**Assertion**
Ref	Expression
wnan	wff (𝜑 ⊼ 𝜓)

See definition df-nan 1484 for more information.

Colors of variables: wff setvar class