wnor - Metamath Proof Explorer

	Metamath Proof Explorer		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > wnor		Structured version Visualization version GIF version

Syntax Definition wnor 1519

Description: Extend wff definition to include joint denial ("nor").

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

**Assertion**
Ref	Expression
wnor	wff (𝜑 ⊽ 𝜓)

See definition df-nor 1520 for more information.

Colors of variables: wff setvar class