cin - Metamath Proof Explorer

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Syntax Definition cin 3886

Description: Extend class notation to include the intersection of two classes (read: "𝐴 intersect 𝐵").

**Hypotheses**
Ref	Expression
cA	class 𝐴
cB	class 𝐵

**Assertion**
Ref	Expression
cin	class (𝐴 ∩ 𝐵)

See definition df-in 3894 for more information.

Colors of variables: wff setvar class