Math Encounters

Note: Through August 2022, Math Encounters
will take place on the second Wednesday of the month.

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

Math Encounters:

“Error-Correcting Codes: The Mathematics of Communication”

featuring Nathan Kaplan

Wednesday, July 13
4:00 pm and 7:00 pm ET (New York)

(in person/online)

Suppose we are trying to communicate over a “noisy channel.”  There is some probability that the information I send is not the information you receive.  We could communicate more reliably by agreeing to repeat the intended message multiple times, but there is a cost to this repetition.  A major goal in the theory of error-correcting codes is to understand how to efficiently build redundancy into messages so that we can identify and correct errors.  Join mathematician Nathan Kaplan as he introduces us to the ideas that go into the mathematics of communication and shares several neat examples of problems we can solve using ideas from coding theory, including “Hat Problems,” “Twenty Questions with Lies,” and strategies for gambling on soccer matches in Finland.

Special introduction by Tony Fisher, Principal, Hunter College High School.


Photography notice

By registering for a Math Encounters presentation, you acknowledge that you may be photographed or videotaped by Museum staff and associates and agree to abide by the MoMath General Policies for Events and Photograph Release.

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 one to two 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!

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.