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Syntax Definition c-bnj18 28719
Description: Extend class notation with the function giving: the transitive closure of  X in  A by  R. (New usage is discouraged.)
Hypotheses
Ref Expression
cA  class  A
cR  class  R
cX  class  X
Assertion
Ref Expression
c-bnj18  class  trCl ( X ,  A ,  R )

See definition df-bnj18 28720 for more information.

Colors of variables: wff set class
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