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:

“Come Sail Away: Math for the Cruise Director”
with Penny Haxell — March 4 at 4:00 pm

“Come Sail Away: Math for the Cruise Director”
with Penny Haxell — March 4 at 7:00 pm

March 2020 Math Encounters poster

A cruise director is responsible for arranging all social events on a ship.  How can the passengers be split into harmonious groups for dinner seatings and excursions?  What’s a good way to assign partners for an evening of tango lessons?  Come help the cruise director use graph theory to make arrangements such as these — you might even become part of a human computer!  Special introduction by Peter Winkler, MoMath’s Distinguished Professor for the Public Dissemination of Mathematics.

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.