This page contains a list of research visits of at least one week which I made in the period before 1999. At each of these universities I have given one or more lectures. At some of these places I have given longer series of lectures; the list of these can be found on a separate page. Besides the lectures given during the research visits listed here I have also given separate lectures at many universities; you can find the list here

1995-1998

• University of Porto, Portugal
  18-22.11.1998


• Free University Berlin, Germany
  21-27.6.1998


• Concordia University Montreal, Canada
  16-20.5.1998


• Universita La Sapienza, Roma, Italy
  19-27.5.97


• Universidad de Sevilla, Spain
  2-10.4.97


• Technical University Ilmenau, Germany
  10-15.3.97


• Technical University Ilmenau, Germany
  1-14.9.96

1990-1994

• Technical University Ilmenau, Germany
  18-24.9.1994


• Tsinghua University, Beijing, China
  10-31.8.1993


• EPF Lausanne, Switserland
  8-15.6.93


• University of Marburg, Germany
  25-29.1.93


• Technical University Ilmenau, Germany
  23.3-4.4.1992


• Université de Nice, France
  23-30.1.1992


• University of Stuttgart, Germany
  18.11-14.12.91


• University Twente, Enschede, The Netherlands
  1.3-31.5.91


• University of Stuttgart, Germany
  9-22.12.90


• Universitá degli Studi di Trieste, Italy
  10-24.10.90


• Boston University, USA
  16-21.6.90


• University of Minnesota, Minneapolis, USA
  23.5-15.6.90


• Université de Nice, France
  12.3-7.4.1990


• University Twente, Enschede, The Netherlands
  16-20.1.90

1985-1989

• University of Heidelberg, Germany
  29.11-16.12.1989


• University of Basel, Switserland
  12-25.11.89


• University of Warwick, Coventry, UK
  1-21.7.89


• Georgia Institute of Technology, Atlanta, USA
  10-14.6.89


• Inst. de Ciencias Matematicas de São Carlos, Brasil
  5.5-3.6.1989


• Université de Nice, France
  1.10.1988-31.3.1989


• Technical University Ilmenau, Germany
  19-30.9.1988


• Université de Nice, France
  1.10.1987-31.3.1988


• Free University Amsterdam, The Netherlands
  16-20.6.87


• Université de Nice, France
  27-31.5.87


• University of Houston, Houston, USA
  12-26.4.1987


• Stefan Banach Int. Math. Center, Warsaw, Poland
  17-26.9.1986


• University of Heidelberg, Germany
  1-15.9.86 and 27.9-31.12.86


• Comenius University, Bratislava, Tsjechoslovakia
  1-8.4.86


• Michigan State University, East Lansing, USA
  2-28.2.1986


• University of Heidelberg, Germany
  7-29.11.1985


• Free University Amsterdam, The Netherlands
  17-21.6.85

1980-1984

• University of Heidelberg, Germany
  15-27.10.1984


• J.E. Purkyne University, Brno, Tjechoslovakia
  11-16.6.84


• TH Delft, The Netherlands
  23-27.1.84


• University of Munich, Germany
  29.5-3.6.83


• ETH Zürich, Switserland
  23-28.5.1983


• Brown University, Providence RI, USA
  15-20.3.1983


• University of Heidelberg, Germany
  12-18.12.82


• Comenius University, Bratislava, Tsjechoslovakia
  7-13.11.82


• University of Graz, Austria
  2-6.11.82


• Heriot-Watt University, Edinburgh
  22-27.3.82


• University of Miami, Coral Gables, USA
  20-24.12.81


• University of Colorado, Boulder, USA
  6-10.12.81


• J.E. Purkyne University, Brno, Tsjechoslovakia
  7-12.6.81


• Brown University, Providence RI, USA
  16-21.2.1981

1976-1979

• ETH Zürich, Switserland
  18-23.6.79


• Mathematisch Centrum, Amsterdam, The Netherlands
  4-7.6.79


• Brown University, Providence RI, USA
  14-20.5.1979


• Michigan State University, East Lansing, USA
  23-28.5.1977


• Brown University, Providence RI, USA
  1.10.1976-30.6.1977