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Syntax Definition w3nand 36420
Description: The double nand.
Hypotheses
Ref Expression
wph wff 𝜑
wps wff 𝜓
wch wff 𝜒
Assertion
Ref Expression
w3nand wff (𝜑 ⊼ 𝜓 ⊼ 𝜒)
See definition df-3nand 36421 for more information.
Colors of variables: wff setvar class
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