| 1981-1982 | Member of the board of directors of the Sonderforschungsbereich 21 | ||
| at the University of Bonn | |||
| 1982-1986 | Member of the Council of the Faculty of Mathematics and | ||
| 1988-1990 | Natural Sciences of the University of Augsburg | ||
| 1983-1984 | Vice-Dean of the Faculty of Mathematics and Natural Sciences | ||
| of the University of Augsburg | |||
| 1984-1986 | Dean of the Faculty of Mathematics and Natural Sciences | ||
| of the University of Augsburg | |||
| 1984-1991 | Director of the Institute of Mathematics of the University of Augsburg | ||
| 1986-1988 | Member of the Academic Senate of the University of Augsburg | ||
| 1988-1991 | Member of the Budget Committee of the University of Augsburg | ||
| 1991 - Sept. 2012 | Vice President of the Konrad-Zuse-Zentrum für Informationstechnik Berlin | ||
| since 1992 | Member in various commissions of the TU Berlin | ||
| Member in various commissions and advisory councils of federal ministries | |||
| 2002- May 2008 | Chair of the DFG Research Center Matheon "Mathematics for key technologies", TU Berlin | ||
| 2002- March 2009 | Member of the Executive Board of the DFG Research Center Matheon "Mathematics for key technologies", TU Berlin | ||
| 2007-2014 | Secretary of the International Mathematical Union (IMU) | ||
| June 2011 - Sept. 2015 | Chair of the Einstein Stiftung Berlin | ||
| Oct. 2012 - Sept. 2015 | President of the Konrad-Zuse-Zentrum für
Informationstechnik (ZIB) |
||
| Oct. 2015 - Sept. 2020 |
President of the Berlin-Brandenburg Academy
of Sciences and Humanities (BBAW) |