My videos are listed below:

1. Complex Analysis (25 videos plus an introduction which you should listen to first)

2. Topology (19 videos plus and introduction which should be viewed first) 

3. Puzzles to Exercise the Mind (13 videos consisting of many puzzles which are designed to keep your mind active engaged in reasoning and logic)

4. Non-Euclidean Geometry (14 videos on non-Euclidean geometry with a focus on hyperbolic geometry)