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M3 (Relations (R: S <-> T), Sets and Constants, Enumerated sets hold…
M3
Relations (R: S <-> T)
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Range: ran(R)
The range of R is the set containing all elements of T that are related (via R) with some element of S
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Relational image: R[U]
The relational image of R on U is the set containing all elements of T that are related (via R) with some element of U
Relational inverse: R~
The relational inverse of R is the set containing all pairs (y,x) such that (x,y) belongs to R
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