The Arithmetic and Geometry of Algebraic Cycles

The NATO Advanced Study Institute on "The Arithmetic and Geometry of Algebraic Cycles" was held at the Banff Centre for Conferences in Banff (Al­ berta, Canada) from June 7 until June 19, 1998. This meeting was organized jointly with Centre de Recherches Mathematiques (CRM), Montreal, as one of the CRM Summer schools which take place annually at the Banff Center. The conference also served as the kick-off activity of the CRM 1998-99 theme year on Number Theory and Arithmetic Geometry. There were 109 participants who came from 17 countries: Belgium, Canada, China, France, Germany, Greece, India, Italy, Japan, Mexico, Netherlands, - mania, Russia, Spain, Switzerland, the United Kingdom and the United States. During a period of two weeks, 41 invited lectures and 20 contributed lec­ tures were presented. Four lectures by invited speakers were delivered every day, followed by two sessions of contributed talks. Many informal discussions and working sessions involving small groups were organized by individual partic­ ipants. In addition, participants' reprints and preprints were displayed through­ out in a lounge next to the auditorium, which further enhanced opportunities for communication and interaction.

Cohomological Methods.- Lectures on algebro-geometric Chern-Weil and Cheeger-Chern-Simons theory for vector bundles.- Deligne cohomology and the geometric (co)bar constructions.- Kunga-Satake varieties and the Hodge conjecture.- Hodge and Weil classes on abelian varieties.- Bloch-Kato conjecture and motivic cohomology with finite coefficients 117.- Chow Groups and Motives.- Indecomposable hogher Chow cycles.- Equivalence relations on algebraic cycles.- Letter to Dick Gross on higher Abel-Jacobi maps.- Finiteness of torsion in the codimension-two Chow group: An Axiomatic Approach.- Algebraic cycle complexes: Basic Properties.- Algebraic cycles on abelian varieties: Application of abstract Fourier theory.- Motives and filtrations on Chow groups II.- Zero cycles on singular varieties.- Arithmetic Methods.- Prepotentials of Yukawa couplings of certain Calabi-Yau 3-folds and mirror symmetry.- Weight-monodromy conjecture for 1-adic representations associated to modular forms: A supplement to the paper [10].- Cohomology computations related to the 1-adic Abel-Jacobi map modulo l.- Integral elements in K-theory and products of modular curves.- Appendix to Scholl’s article: A counterexample to a conjecture of Beilinson.- Reduction of abelian varieties.- The arithmetic of cetain Calabi-Yau varieties over number fields.- Classical and elliptic polylogarithms and special values of L-series.