Math Encounters

Now offering FREE, online sessions!

Click here for FREE Math Encounters videos

Math Encounters is MoMath’s popular free public presentation series celebrating the spectacular world of mathematics, produced with support from the Simons Foundation.  For further information, call the National Museum of Mathematics at 212-542-0566 or email mathencounters@momath.org.

Next up

“Bouncing Billiards: The Symmetries and Mathematics in the Path of a Rolling Ball”

with Diana Davis

Wednesday, February 3 at 4:00 pm and 7:00 pm ET (New York)

If you hit a ball on a pool table, it will bounce around for a while — it might even return to where it started and repeat its path.  It turns out that these periodic trajectories are very beautiful, forming a unique kind of mathematical art.  Join Dr. Diana Davis, Phillips Exeter Academy Instructor in Mathematics, as she shares an amazing array of images, discusses how she and her colleagues figured out how to draw these intricate paths, and reveals some surprising properties — buddies, families, and symmetry — that they discovered along the way.

Special introduction by Amie Wilkinson, Professor of Mathematics, University of Chicago.

This is a live-streamed event.  Occasional video recordings are made available for a fee at videos.momath.org.

Register for the 4:00 pm session
Register for the 7:00 pm session

Photography notice

By registering for a Math Encounters presentation, you agree that you may be photographed or videotaped by Museum staff and associates.

Books by the speakers

We are happy to offer books edited or authored by Math Encounters speakers through our online shop.

Math Encounters available on YouTube and DVD

Math Encounters presentations are generally posted to our YouTube page within 1-2 months of filming.  Due to copyright issues, some presentations may not be reproduced on the internet.  Presentations posted online are also available for purchase via our online shop.  Click here to purchase yours today!

Previous Math Encounters presentations

Presented by the Simons Foundation and the National Museum of Mathematics

Please note that all children under the age of 16 must be accompanied by an adult.