Talk:Topology/Topological Spaces

I'm not really sure how this site works, but I'd like to propose another Exercise to be added to this page: 2. Prove a set U is open iff it is a neighborhood of all of its points.

If you wish to contact me for some reason, email civman2000@hotmail.com

It would be extra cool if you can include solutions or sketch-solutions to the problems on a seperate page.

plz add one more question in the excercise :

1. Let X be a topological space, let A be a subset of X .Suppose that for each x in X there is an open set U containing x such that  U is containd in A. Show that A is open set in X.

If you want to contact me my id is pksharma_davc@yahoo.co.in


 * Hi and welcome to wiki books. I will attempt to add these problems when I have some time, but in the mean time you may feel free to do it yourself! :)  Editing the text book is just as easy as editing this page, and we are always glad to have more people. Thenub314 (talk) 16:21, 11 July 2009 (UTC)