Every Singleton in a Hausdorff Space is Closed

[@suayhossien]

Nice proof thanks! Currently studying for my measure theory and point set topology comprehensives in February. Your topology videos are helping so much. Can you do some stuff on separation axioms? Maybe counterexamples? also counterexamples to show interior or closure isn’t contained in closure of interior and Vis versa and that the union of closures and closure of unions are not equal

[@DrMcCrady]

Thanks and I hope those exams go well! Some of those topics are on my list, I’ll try to get them done sooner rather than later.