Hausdorff Space

In our seventh lesson, we would talk about a Hausdorff space.
The concept is well understood and some theorems have been stated and proved.

To get the previous lesson on interior, exterior and boundary of a topologic space, click on this link
Thank you

[ReindolfBoadu]

Theorem 1 as used at the last part of the video to explain the proof is given as;

Let X be a topological space and let A be a subset of X. Then A
is open in X if and only if for each x in A, there is a neighbourhood
U of x such that x is in U and U is a subset of A

Thank you.

[divinefire]

You explained the concept so well
Well done

[qinisodlamini]

Thabk you very much for this you are a life saver. If I may ask which textbook are you using ?

[knowit]

Please can you do something on neighborhood in topology for me