TITLE: Polynomial time algorithms to compute market equilibria. SPEAKER: Kamal Jain, Microsoft Research Abstract: I will present some of the recent developments in the area of computing market equilibria with an emphasis on my latest work titled, "A polynomial time algorithm for computing the Arrow-Debreu Market Equilibrium for Linear Utilities". Existence of market equilibria was first conjectured in 1874 and formally proven in 1954 by two Nobel laureates, Arrow and Debreu. Their existence theorem holds for any concave utility function. The case of linear utilities provides a lot of simplification and a real opportunity to understand computational issues. For this reason, this case of linear utilities was heavily studied (at least for quarter century), which is recently settled in last December.