Contents

1. This page
2. Open Intervals and Open Sets in Real Line
3. A Special Type of Open Sets
4. Reformulating Definition of Open Sets.
5. Some Interesting Properties of Open Sets.
6. (Optional) Generalising the Definition of Open Sets
7. (Optional) A vague introduction to the Concept of Generalisation in Mathematics.

Note: This is the draft zero of this article – hopefully, if time permits, I’ll keep updating it. You can give your suggestions, if any!

Look for page numbers below!