Table of Contents

Surfaces with K2=pg=1 and their period mapping.- Internal hom-sets in an extension of affine schemes over a field.- Solutions of weierstrass equations.- Instantons and sheaves on ? IP3.- Set theoretical complete intersections in characteristic p>0.- Intersection properties of modules.- On the theory of adjoints.- Infinite dimensional universal formal group laws and formal a-modules.- On the dual of a smooth variety.- Symmetric forms and weierstrass semigroups.- Biregular theory of fano 3-folds.- Singularites Rationnelles Du Resultant.- On the classification of non-complete algebraic surfaces.- The length of vectors in representation spaces.- The generic perfectiness of determinantal schemes.- On weierstrass points and automorphisms of curves of genus three.- Deformation and transversality.- Finite generations of lifted P-adic homology with compact supports. Generalization of the well conjectures to singular, non-complete algebraic varieties.- On a problem of grothendieck.- Faithfully representable analytic groups.- The poincare - serre - verdier duality.- Mumford's numerical function and stable projective hypersurfaces.- The trace of frobenius for elliptic curves with complex multiplication.- Abelian varieties: moduli and lifting properties.- A family of genus two fibrations.- Ideals associated to a desingularization.- Schottky groups and schottky curves.- Moduli for principal bundles.- ?1 for surfaces with small k2.- Symmetric powers of the cotangent bundle and classification of algebraic varieties.- Supersingular K3 surfaces.- Rational singularities in dimension ?2.- Deformations and local torelli theorem for certain surfaces of general type.- Formal groups and some arithmetic properties of elliptic curves.