I want to know if there's any book that categorizes problems by subjects of Functional Analysis.


I'm studying Functional Analysis now a days and I really need to solve some problems in order to assure myself that I've really understood the concepts and definitions.


For example: problems related to the Hahn-Banach theorem or Banach Spaces or Hilbert Spaces or related subjects. 



A book for problems in Functional Analysis
Another classical book is [Theorems and problems in functional analysis](http://books.google.com/books?id=XAApQAAACAAJ) by Kirillov and Gvishiani.


