TOPICS IN COHOMOLOGICAL STUDIES OF ALGEBRAIC VARIETIES IMPANGA LECTURE NOTES Piotr Pragacz (Ed.) BIRKH"AUSER Series: Trends in Mathematics 297 + XXVIII pp., 2005 The whole volume is dedicated: En hommage `a Grothendieck CONTENTS: Preface P. Pragacz, Notes on the life and work of Alexander Grothendieck. P. Aluffi, Characteristic classes of singular varieties. M. Brion, Lectures on the geometry of flag varieties. A. S. Buch, Combinatorial K-theory. H. Duan, Morse functions and cohomology of homogeneous spaces. A. Kisisel, Integrable systems and Gromov-Witten theory. P. Pragacz, Multiplying Schubert classes. J. Sch"urmann, Characteristic classes of constructible functions. M. Szyjewski, Algebraic K-theory of schemes. H. Tamvakis, Gromov-Witten invariants and quantum cohomology of Grassmannians.