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Syntax Definition copab 3808
Description: Extend class notation to include ordered-pair class abstraction (class builder).
Hypotheses
Ref Expression
wph
vx  setvar
vy  setvar
Assertion
Ref Expression
copab  { <. ,  >.  |  }

See definition df-opab 3810 for more information.

Colors of variables: wff set class
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