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

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Since ancient Greece, researchers have tried to isolate special rational points on curves. Now they have the first ever ...

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 ...