Professor of Computer Science, Director of Research at Birkbeck, University of London. BSc and MSc (Moscow State University), PhD and Habilitation in Mathematics (Novosibirsk University). Research scientist at Keldysh Institute of Applied Mathematics (Russian Academy of Sciences), Alexander von Humboldt Foundation fellow (FU Berlin), Professor of Logic and Computation at King’s College London (2001-2005). Research interests: knowledge representation and reasoning (spatial, temporal, etc.), logic in computer science, in particular, modal and description logics.