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Syntax Definition wb 103
Description: Extend our wff definition to include the biconditional connective.
Hypotheses
Ref Expression
wph wff 𝜑
wps wff 𝜓
Assertion
Ref Expression
wb wff (𝜑𝜓)

See definition df-bi 115 for more information.

Colors of variables: wff set class
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