AG : Daniel Corey (Berlin) : Degenerations of spinor varieties and even Delta-matroids. Exposé en ligne.
The spinor variety S_n is a Lie-type D analog of the Grassmannian. We will discuss the initial degenerations (degenerations arising from Groebner theory) of the spinor variety and show how they are related to (valuated) even Delta-matroids. As an application,