cdm - Metamath Proof Explorer

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Syntax Definition cdm 5589

Description: Extend the definition of a class to include the domain of a class.

**Hypothesis**
Ref	Expression
cA	class 𝐴

**Assertion**
Ref	Expression
cdm	class dom 𝐴

See definition df-dm 5599 for more information.

Colors of variables: wff setvar class