Columbia Mathematics Department Colloquium


The positive Grassmannian


Lauren Williams

(UC Berkeley)



The positive Grassmannian is a remarkable subset of the real
Grassmannian which has recently arisen in diverse contexts such as
integrable systems, scattering amplitudes, and free probability.  I
will provide an elementary introduction to the positive Grassmannian,
focusing on a few intriguing aspects: what it ``looks like," and its
connection to shallow water waves (via the KP hierarchy).


Wednesday, Mar 26, 5:00 - 6:00 p.m.
Mathematics 520
Tea will be served at 4:30 p.m.