3:54

Aggvent Calendar Day 19

27:26

This open problem taught me what topology is

8:22

Aggvent Calendar Day 17

12:39

these are the only perfect squares

8:31

The Intuitive Concept of a Derivative

4:44

Aggvent Calendar Day 9

22:42

I Built a Lathe Clock

6:28

Define the winning strategy for white and it will lead you to victory!