The geometric Satake equivalence, due to Mirkovic and Vilonen, establishes an equivalence between certain perverse sheaves on the affine Grassmannian $Gr_G$, for a split reductive group $G$, and representations of the Langlands dual group $\hat G$.…
Eventi
A cooking class on exotic surfaces in 4-manifolds – Oliviero Malech (SISSA)
Two smoothly embedded surfaces in the same smooth 4-manifold are called exotic if they are C^0 ambient isotopic without being…
Log intersection theory – Leo Herr (Leiden)
Log structures are “magic powder” that make mildly singular spaces appear smooth. Log schemes literally lie between ordinary schemes and tropical geometry, and are related to Berkovich Spaces. Problems in Gromov-Witten Theory demand intersection…