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Syntax Definition co 5539
Description: Extend class notation to include the value of an operation 
F (such as + ) for two arguments  A and  B. Note that the syntax is simply three class symbols in a row surrounded by parentheses. Since operation values are the only possible class expressions consisting of three class expressions in a row surrounded by parentheses, the syntax is unambiguous.
Hypotheses
Ref Expression
cA  class  A
cB  class  B
cF  class  F
Assertion
Ref Expression
co  class  ( A F B )

See definition df-ov 5542 for more information.

Colors of variables: wff set class
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