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Set-Theoretic Concepts: Formal Definition of Graph

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Definition: Given a function f:A→Bf: A\to Bf:A→B, the graph of fff, denoted by Gr(f)Gr(f)Gr(f), is defined by Gr(f):={(x,f(x)):x∈A}Gr(f):=\{(x,f(x)):x\in A\}Gr(f):={(x,f(x)):x∈A…
By Zilin Jiang