Egor Yasinsky
Equivariant geometry of Fano varieties abstract
Abstract:
I will discuss some questions related to equivariant birational geometry of del Pezzo surfaces and, possibly, of higher-dimensional Fano varieties, focusing on the notion of birational rigidity.
13:15 • EPF Lausanne, Salle MA A1 12
Sylvain Robert (EPFL, Lausanne)
Title T.B.A. abstract
Abstract:
tba
15:15 • ETH Zentrum, Rämistrasse 101, Zürich, Building HG, Room G 19.1
Marius Lemm (University of Tübingen)
Discrete Green\'s functions and optimal Hardy weights abstract
Abstract:
"We consider elliptic, divergence-form operators on Z^d with randomcoefficients. Building on a novel perturbative approach to homogenizationtheory due to Bourgain and subsequent refinements, we derive an asymptoticexpansion of the annealed (=averaged) Green’s function and its first (d+1)derivatives at large distances. As a corollary, we show that derivatives up toorder d+1 behave like those of the standard Laplacian. In the second part ofthe talk, we discuss how Green’s function estimates from homogenizationtheory can be used to estimate Hardy weights. We find that, after suitableaveraging, the optimal Hardy weight has the familiar inverse-square behaviorat large distances." Joint work with Matthias Keller
16:15 • Université de Genève, Conseil Général 7-9, Room 1-15
Youness Lamzouri (Institut Elie Cartan, Université de Lorraine)
Title T.B.A.
17:00 • Universität Basel, online Seminar