wer - Metamath Proof Explorer

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Syntax Definition wer 8453

Description: Extend the definition of a wff to include the equivalence predicate.

**Hypotheses**
Ref	Expression
cA	class 𝐴
cR	class 𝑅

**Assertion**
Ref	Expression
wer	wff 𝑅 Er 𝐴

See definition df-er 8456 for more information.

Colors of variables: wff setvar class