45:07
published on June 10, 2026
Residual finiteness of graphs of free groups with cyclic edge groups
By Zachary Munro
Cohomology of real algebraic varieties and sums of squares
Appears in collection : Géométrie algébrique en l'honneur de Claire Voisin
I will describe relations between Chern classes and constant cohomology classes in the cohomology of real algebraic varieties. I will give applications to sums of squares problems. This is joint work with Olivier Wittenberg.
