April 4	Moshe Rosenfeld , University of Washington (email: moishe@u.washington.edu) Open problems in discrete geometry.
	April 11	Alvaro Pelayo , University of Michigan (email: apelayo@umich.edu) Combinatorial Symplectic Ball Packing and spaces of equivariant symplectic embeddings.
	April 18	Monica Vazirani , University of California, Davis (email: vazirani@math.ucdavis.edu) Affine Tableaux and the Double Affine Hecke Algebra.
	April 25	Andy Frohmader , University of Washington (email: frohmade@math.washington.edu) Clique Vectors of Graphs.
	May 9	Abhinav Kumar , Microsoft (email: abhinavk@microsoft.com) Uniqueness of some spherical codes related to the $E_8$ and Leech lattices.
	May 16	Julianna Tymoczko , University of Michigan (email: tymoczko@umich.edu) Divided difference operators for Grassmannians.
	May 23	Tristram Bogart , University of Washington (email: bogart@math.washington.edu) The mad treasurer and the toric state polytope.
	May 30	Kurt Luoto , University of Washington (email: kwluoto@math.washington.edu) A matroid-friendly basis for quasisymmetric functions Note: begins at 3:45pm.