cxpk - New Foundations Explorer

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Syntax Definition cxpk 4175

Description: Extend the definition of a class to include the Kuratowski cross product.

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

**Assertion**
Ref	Expression
cxpk	class (A ×_k B)

See definition df-xpk 4186 for more information.

Colors of variables: wff setvar class