Table of Contents

On the geometry in codimension 2 of Grassmann manifolds.- Invarianten binärer formen.- Deformation kompakter komplexer Räume.- Kurven auf den Hilbertschen Modulflächen und Klassenzahlrelationen.- Picard schemes of formal schemes; application to rings with discrete divisor class group.- Modifications of complex varieties and the Chow Lemma.- Some results on cubic threefolds.- Studies on degeneration.- Hyperelliptic curves over number fields.- Modulräume algebraischer Mannigfaltigkeiten.- Abbildungen in arithmetische Quotienten hermitesch symmetrischer Räume.- Singular abelian surfaces and binary quadratic forms.- to classification theory of algebraic varieties and compact complex spaces.