# Abstract Lukas Braun

**Lukas Braun** will speak on

**Local Cox rings for klt singularities**

**Abstract:** In this talk, I will define Cox rings for (klt)

singularities. Different questions arise: What is a good model for a

singularity in this context? How do the models relate? Is the iteration

of Cox rings well-defined? What is a meaningful notion of finite

generation in the local case? The talk is based on joint work with

Joaquin Moraga (Princeton).