# Mathematical Sciences

## Visual Gems of Number Theory

**Date:** 3:30pm - 4:30pm PDT September 25, 2013
**Location:** John Howard 132

#### John Howard 132

Number theory—a branch of mathematics devoted to the study of the integers—dates back to the time of the ancient Greeks. A course in number theory is often a part of an undergraduate mathematics major.

While preparing this talk, I looked through several number theory texts. I was struck by how few illustrations most of them have. An integer can represent many things—the cardinality of a set, the length of a line segment, the area of a region, the volume of a solid, etc. So the texts should have more pictures. In this talk I’ll try to remedy that, and present some of my favorite pictures for use in studying number theory, what I call ** visual gems of number theory**.

No prior experience with number theory is required.

Professor Nelsen has written several books that feature ways to illustrate mathematical concepts with pictures. See his website.