October 7	Gregg Musiker , Massachusetts Institute of Technology (webpage: http://www-math.mit.edu/~musiker/ ) Title: Positivity Results for Cluster Algebras from Surfaces.
	October 14	Benjamin Matschke, TU Berlin (webpage: http://www.math.tu-berlin.de/~matschke/ ) Title: Prodsimplicial-neighborly Polytopes.
	October 22	Persi Diaconis, Stanford (webpage: http://www-stat.stanford.edu/~cgates/PERSI) Title: Random Walks and Hyperplane Arrangements. Note: This talk is on a different day than the usual seminar.
	October 23	Persi Diaconis, Stanford (webpage: http://www-stat.stanford.edu/~cgates/PERSI) Title: Shuffling Cards and Adding Numbers. Note: This is part of the UW-PIMS Mathematics Colloquium and is at a different time/day than the usual seminar.
	October 28	Karola Meszaros , Massachusetts Institute of Technology (webpage: http://www-math.mit.edu/~karola/ ) Title: Branched Polymers and Hyperplane Arrangements.
	November 4	Brant Jones , UC Davis (webpage: http://www.math.ucdavis.edu/~brant/ ) Title: Affine Structures for Certain $E_6$ Crystals.
	November 6	William Fulton, University of Michigan (webpage: http://www.math.lsa.umich.edu/~wfulton/) Title: Character Formulas. Note: This is part of the UW-PIMS Mathematics Colloquium and is at a different time/day than the usual seminar.
	November 18	Lauren Williams, UC Berkeley (webpage: http://math.berkeley.edu/~williams/ ) Title: Tableaux Combinatorics for the Asymmetric Exclusion Process and Askey-Wilson Polynomials.
	November 23	Dmitri Kozlov, MSRI / University of Bremen Title: A Few Themes from Combinatorial Algebraic Topology. Note: This talk is on a different day than the usual seminar.
	December 2	Fu Liu, UC Davis (webpage: http://www.math.ucdavis.edu/~fuliu/ ) Title: Higher Integrality Conditions and Volumes of Slices.
	December 9	Alan Stapledon, UBC (webpage: http://www-personal.umich.edu/~astapldn/Webpage/Welcome.html ) Title: Kneser's Theorem and Inequalities in Ehrhart Theory.