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.

Leiter:   Prof. Dr. Daniel Greb

Tel.: +49 / (0)201 / 18-36898 , Email: daniel.greb - at -

Daniel Greb
Sekretaerin:   Martina Striebeck

Tel.: +49 / (0)201 / 18-32421 , Email: martina.striebeck - at -

Research Area: Algebraic Geometry and Complex Geometry


  • Birational geometry of higher-dimensional varieties
  • Structure theory of compact Kähler manifolds
  • Geometry of varieties with trivial canonical bundle / hyperkähler manifolds
  • Kähler-Einstein metrics on singular spaces
  • Singularities of the Minimal Model Program


  • Geometric Invariant Theory
  • Hamiltonian group actions and momentum maps
  • Stability conditions and quotients


  • Moduli spaces of coherent sheaves and Higgs bundles on higher-dimensional varieties and Kähler manifolds
  • Kobayashi-Hitchin correspondence
  • Nonabelian Hodge theory
  • Geometry of period domains
  • Uniformisation of compact complex spaces