- #1
pivoxa15
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Homework Statement
Let f:X->Y be a cts map from a topological space X to a Hausdorff space Y. Prove that the graph L={(x,y) in XxY: y=f(x)} is a closed subset of XxY.
The Attempt at a Solution
Hausdorff space are linked with open sets so how do you prove closeness in XxY?