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The graph of a mapping f:X --> Y is a subset of the product X×Y. What properties characterize the graphs of mappings among all subsets of X×Y?

Topology
Sets and Functions (XL)
Functions

The graph of a mapping f:X --> Y is a subset of the product X×Y.
What properties characterize the graphs of mappings among all subsets of X×Y?

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Topology
Sets and Functions (XL)
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This solution is comprised of a detailed explanation of the properties of the graphs of mappings.
It contains step-by-step explanation of the following problem:

The graph of a mapping f:X --> Y is a subset of the product X×Y.
What properties characterize the graphs of mappings among all subsets of X×Y?

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