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Syntax Definition w3a 1087
Description: Extend wff definition to include three-way conjunction ('and').
Hypotheses
Ref Expression
wph wff 𝜑
wps wff 𝜓
wch wff 𝜒
Assertion
Ref Expression
w3a wff (𝜑 ∧ 𝜓 ∧ 𝜒)
See definition df-3an 1089 for more information.
Colors of variables: wff setvar class
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