I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those ...

In this livestream I cover a variety of topics listed below. I have organized the topics in order and provided a timestamp for your convenience. If this livestream has helped you and would like to see ...

Using high school algebra and geometry, and knowing just one rational point on a circle or elliptic curve, we can locate infinitely many others. You’re sitting at the end of a long conference table, ...

On weekdays, he stands in front of a classroom of 20, dry-erase marker in hand, gently guiding students through trigonometry, ...

The assumption in the main result of Basic differential forms for actions of Lie groups (Proc. Amer. Math. Soc. 124 (1996), 1633-1642) is removed. Journal Information This monthly journal, begun in ...