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What is the meaning of "
dom(R)=\left \{ u:\exists v(u,v)\in R\right \}"?

What is the meaning of "dom(R)=\left \{ u:\exists v(u,v)\in R\right \}"?-example-1

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It means that the domain of the relation
R is the set of such elements
u for which there exists such an element
v that
u and
v are related.

User Igor Palaguta
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