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Syntax Definition cixp 7553
Description: Extend class notation to include infinite Cartesian products.
Ref Expression
vx  setvar  x
cA  class  A
cB  class  B
Ref Expression
cixp  class  X_ x  e.  A  B

See definition df-ixp 7554 for more information.

Colors of variables: wff setvar class
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