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Syntax Definition copab 4076
Description: Extend class notation to include ordered-pair class abstraction (class builder).
Hypotheses
Ref Expression
wph  wff  ph
vx  set  x
vy  set  y
Assertion
Ref Expression
copab  class  { <. x ,  y >.  |  ph }

See definition df-opab 4078 for more information.

Colors of variables: wff set class
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