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Mirrors > Home > MPE Home > Th. List > csu  Unicode version 
Description: Extend class notation to include finite summations. (An underscore was added to the ASCII token in order to facilitate set.mm text searches, since "sum" is a commonly used word in comments.) 
Ref  Expression 

cA  
cB  
vk 
Ref  Expression 

csu 
Colors of variables: wff set class 
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