**Triangles, Rotation, a Theorem and the Jackpot**

by Dave Auckly

**Publisher**: arXiv 2013**Number of pages**: 43

**Description**:

This is an expository paper designed to introduce undergraduates to the Atiyah-Singer index theorem 50 years after its announcement. It includes motivation, a statement of the theorem, an outline of the easy part of the heat equation proof. It includes counting lattice points and knot concordance as applications.

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