Find here the expanded notes and exercises for my deformation theory of algebras lectures at MSRI in June 2012 (includes a new exercise sheet five);

Find here slides for my 06-28-11 talk at the Isle of Skye ICMS conference on noncommutative algebra in honor of Stafford and Brown. See also the printable version, and the beamer version.

Find here slides for my 06-07-11 talk at Notre Dame for the summer 2011 program on quantization. See also the printable version, and the beamer version.

Please find here slides for my 11-10-10 colloquium talk in Toronto on "Poisson varieties and D-modules," and the printable version, and the beamer version.

Find here slides for my 03-01-11 talk at the algebra seminar at U. Manchester (previously given on Jan. 31 at the Institut Henri Poincare in Paris), on "Computational approaches to Poisson traces associated to finite subgroups of Sp(2n,c)." See also the printable version, and the beamer version.

Find here slides for my 04-09-11 talk at the AMS sectional meeting at the College of the Holy Cross in Worcester, MA, on "Normality and quadraticity for special ample line bundles on toric varieties arising from root systems." See also the printable version, and the beamer version.

Click here for the course homepage for 18.700 (Linear algebra) at MIT in Fall 2010, which I taught.

Click here for the course homepage for 18.735 at MIT in Spring 2009, which I taught. The course was on quivers in representation theory.

Find here the Magma code to compute Poisson traces on type D_n Weyl group singularities.