MM5021 ST24: Concerning Problem 1.2 in HW2

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Concerning Problem 1.2 in HW2

◄ About the cardinality of set of discontinuities of a monotone function on (a, b)
Alternative proof that Compact subsets of metric spaces are closed. (Rudin 2.34) ►

So sorry,

I completely forgot!

I will try to fix ut by today

◄ About the cardinality of set of discontinuities of a monotone function on (a, b)
Alternative proof that Compact subsets of metric spaces are closed. (Rudin 2.34) ►