Math Encounters

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 e-mail

Next presentation:

“Dice, Stamps, and Counting: Putting Polynomials to Work”
with Brian Hopkins — February 5 at 4:00 pm

“Dice, Stamps, and Counting: Putting Polynomials to Work”
with Brian Hopkins — February 5 at 7:00 pm

Math Encounters February 2020 poster

Come on, lucky 7!  Is it possible to label two dice differently and still get the same results as normal dice?  And if you have only four-cent and seven-cent stamps, what different totals can you make?  How can polynomials help with these kinds of questions?  Join mathematician Brian Hopkins as we explore generating functions (a way to count using polynomials) to solve these problems and more.

Special introduction by Tony-nominated actress Kathleen Chalfant, winner of the 2018 Obie Award for Lifetime Achievement.

Light refreshments will be served after the 4:00 pm session and at 6:30 in advance of the second session.

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

Get priority seating for Math Encounters!

Become a premium member (Plus, Squared, Exponential, Infinity) at and get priority seating for Math Encounters.*

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


*For Math Encounters priority seating, premium members must arrive before 3:45 pm for the afternoon presentation and 6:30 pm for the evening presentation.