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Mirrors > Home > ILE Home > Th. List > csu | GIF 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 | class 𝐴 |
cB | class 𝐵 |
vk | setvar 𝑘 |
Ref | Expression |
---|---|
csu | class Σ𝑘 ∈ 𝐴 𝐵 |
Colors of variables: wff set class |
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