Graduate Student Seminar, 4:00 pm November 6, 2006; HH229


Sasha Lyapina



The Variety of Lagrangian Subalgebras



Lagrangian subalgebras appear naturally in Poisson geometry as the "graphs" of a Poisson structure on Poisson homogeneous spaces of Poisson Lie groups. In this talk we will look at the set of Lagrangian subalgebras as a subvariety of the corresponding Grassmannian. Following the paper "On the Variety of Lagrangian Subalgebras" by Evens and Lu, we will discuss the geometry of this variety in some important examples.


To volunteer to give a talk, or for any other questions regarding this schedule, contact Sara Miller