Online registration is closed for this event. If available, tickets on the day of the event may incur an additional charge.

Math Encounters — Online:

"Breaking Up Is Hard To Do: The Art of Decomposition"
with Jordan Ellenberg

Wednesday, December 2 at 4:00 pm ET (New York)

Among the most fundamental tasks of mathematics (or science) is to classify in order to understand what kinds of things there are in the world.  A particularly satisfying form of classification is when we can show that every complicated thing is built out of a much smaller set of simpler things.  In chemistry, we get this satisfaction from the periodic table; in mathematics, we find it just about everywhere, from numbers to polynomials to curved surfaces.  Take a tour of some of these "periodic tables" of mathematics with mathematician Jordan Ellenberg and join us as together we explore the surprising relationships among them.

Special introduction by Alex Kontorovich, MoMath's 2020-2021 Distinguished Visiting Professor for the Public Dissemination of Mathematics and Rutgers math professor.

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

This page is for the 4:00 pm ET (New York) session.  Click here to register for the 7:00 pm ET (New York) session instead.

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

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

Please check our online shop for books by Math Encounters presenters.

December 2, 2020 4:00 pm   through   5:30 pm
MoMath Online
United States
Phone: 212-542-0566

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