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Syntax Definition w3a 973
Description: Extend wff definition to include 3-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 975 for more information.
Colors of variables: wff set class
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