Includes bibliographical references.

Ramification theory for higher dimensional local fields ; Unramified correspondences ; Local Leopoldt's problem for ideals in totally ramified xtensions of complete discrete valuation fields ; Quotients of algebraic varieties by Zariski dense equivalence relations ; A note on arithmetic topology and dynamical systems ; A relation between two moduli spaces studied by V. G. Drinfeld ; An invariant for varieties in positive characteristic ; Honda groups and explicit pairings on the modules of Cartier curves ; Algebraic oriented cohomology theories ; Hyperelliptic Jacobians without complex multiplication, doubly transitive permutation groups and projective representations ; Ramification of surfaces: ArtinSchreier extensions Victor Abrashkin ; Fedor Bogomolov and Yuri Tschinkel ; M V Bondarko ; Alexandru Buium ; Christopher Deninger ; Gerd Faltings ; G van der Geer and T Katsura ; Falko Lorenz and Sergei Vostokov ; Alexander Merkurjev ; Yuri G Zarhin ; Igor Zhukov