USask PIMS Geometry and Physics (GAP) Seminar: Julius Grimminger

I will aim to give a pedagogical introduction to 3d Coulomb branches of quiver gauge theories, which are certain holomorphic symplectic varieties with symplectic singularities. After briefly explaining why I care about such spaces as a physicist, I will focus on the mathematical aspects of Coulomb branches, and discuss in particular how to count their holomorphic functions. I will then show how discrete modifications of a quiver induces a discrete quotient on its Coulomb branch.