Because of the attack on the computer network of the University of Duisburg-Essen, the ESAGA site currently can be reached only at Links pointing to do not work (but one could manually replace by net), and similarly for content, such as images, at such addresses contained in our pages. (Email messages to addresses are accepted by our mail servers again.)

We apologize for the inconvenience caused by these problems.

Winter term 2022/23

Linear Algebra I

Masterseminar Lehramt GyGe/BK

PhD-Seminar: Seminar on Stacks

Summer term 2022

Masterseminar Lehramt GyGe/BK

Algebraic Topology

Discrete Mathematics 2

PhD-Seminar: Seminar on Stacks

Summer term 2021

Bachelorseminar Lehramt GyGe/BK

Algebraic Topology

PhD-Seminar: Seminar on Stacks

Winter term 2020/21

Topics in Algebraic Geometry

Bachelorseminar Lehramt GyGe/BK

PhD Seminar: Seminar on Stacks

Summer term 2020

Master Seminar: Geometry of moduli stacks (Fr 14-15, online)

PhD Seminar: Seminar on stacks (Mo 16-18, online)

Winter term 2019

Master/Bachelorseminar Lehramt (GyGe/BK)

PhD-Seminar: Seminar on Stacks (Mo 14-16)

Summer term 2019

PhD-Seminar: Seminar on Stacks (Mo 14-16)

Winter term 2018

Seminar: Algebraic Geometry/Complex Geometry (Mo 16-18)

PhD-Seminar: Seminar on Stacks (Mo 14-16)

Summer term 2018

Algebraic numer theory 2 (Moodle page - use AlgebraicNumberTheory2 to register.)

Seminar: Masterseminar Lehramt (GyGe/BK)

Winter term 2017/18

Seminar on Stacks (with Timo Richarz)

Vorlesung Mathematische Miniaturen 1

Vorlesung Mathematik für Wirtschaftswissenschaftler

Summer term 2017

Complex Manifolds 2

Vorlesung Mathematische Miniaturen 2

Masterseminar Lehramt GyGe/BK

Winter term 2016/17 

Complex Manifolds

Seminar on complex functions

Mathematical miniatures

Summer term 2016

Complex functions

Vector bundles on curves (joint with G. Hein)

Summer term 2015

Algebraic Geometry II

Seminar: Quotients and Moduli

Winter term 2014/15

Algebraic Geometry I

Seminar Introduction to topology

Summer term 2014

Algebra II

Student seminar on ellpitic curves

Algebraic groups and class fields (in English)

Winter term 2013/14

Algebra I

Student seminar on Lie Algebras

Summer term 2013

Linear Algebra II

Student seminar on Groups and Symmetries

Winter term 2012/13

Linear Algebra I

Seminar on modular forms

Summer term 2012

Complex analysis

Seminar: Coxeter groups

Winter term 2011/12

Algebraic groups

Seminar: Projective geometry