Institut fuer Mathematik und Informatik, Universitaet Greifswald, Greifswald, Germany.

1960-65 study in Greifswald, 1965 Master degree, 1969 PhD, 1975 habilitation, 1990-2007 full professor, Chair Analysis, since 2007 emeritus, but still active. Visitor at many leading universities in US, Russia, China, Japan, Europe, 4 times a 7-months visiting postion at the Max-Planck-Institutesin Germany. Head of the 2000 conference on “Partial Differential Equations in Geometry and Physics” (about 200 participants). 61 papers in global analysis, differential geometry and topology, 4 monographs. Special area of work: open manifolds; their geometry; topology; global analysis. About 20 years in the Advisory board of two journals.