Born at Warsaw, 1951.
Mathematics studies at Warsaw University 1969-1974.
Ph.D. in 1977, habilitation in 1983.
The scientific title of professor in 1992.
From 1976 employed by the Institute of Mathematics of Polish
Academy of Sciences (IMPAN).
1998-2002 deputy director of scientific affairs at IMPAN.
Half of position at Warsaw University.
Long term visits: IMPA (Rio de Janeiro), IHES (Bures-sur-Yvette),
the University of Warwick, SUNY at Stony Brook,
University of Yale, Hebrew University of Jerusalem.
Member of Editorial Boards of Fundamenta Mathematica,
Studia Mathematica.
1995 elected member of Warsaw Scientific Society.
Supervisor of PhD's of Mariusz Urba\'nski, Anna Zdunik,
Piotr Mormul, Krzysztof Bara\'nski, Boguslawa Karpi\'nska, Michal Rams.