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

Next up

“Matchings and Couplings: Domino tilings of a chessboard and other tales”

with Dana Randall

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

Covering a chessboard with dominos might sound like a curious blend of old pastimes, but in reality these tilings reveal rich and beautiful mathematical structures.  Interesting patterns can be found in the geometric arrangements of dominos, as well as in the numerical counts of tilings of chessboards and related regions.  Alternatively, viewing each domino on the chessboard as pairing a black square with one of its neighboring red squares, tilings can be interpreted as assigning 32 pairs.  Viewing these “matchings” in a variety of contexts, Georgia Tech ADVANCE Professor of Computing Dana Randall shares a surprising array of applications, from the physics underlying collections of diatomic molecules to dating algorithms for forming couples in a community.

Special introduction by Peter Winkler, William Morrill Professor of Mathematics and Computer Sicence at Dartmouth College.

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

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.