Points of bounded height on del Pezzo surfaces
Points rationnels et groupes fondamentaux : applications de la cohomologie -adique
Je présenterai des résultats de T. Ekedahl et H. Esnault sur les variétés projectives lisses sur un corps de caractéristique strictement positive, disons , dont deux points peuvent être liés par une chaîne de courbes rationnelles, par exemple faiblement unirationnelles, ou de Fano. Notamment : 1) sur un corps fini, de telles variétés ont un point rationnel, résultat qui généralise le théorème de Chevalley-Warning ; 2) sur un corps algébriquement clos, de telles variétés ont un groupe fondamental...
Poisson structures on moduli spaces of sheaves over Poisson surfaces.
Polarized surfaces of positive Kodaira dimension with canonical bundle of small degree.
Polarized surfaces with and
Polyèdre de Newton, éventails et désingularisation, d'après A. N. Varchenko
Polynomial bounds for the number of automorphisms of a surface of general type
Polynomial structures and generic Torelli for projective hypersurfaces
Polynomials with high multiplicity
Polytopes, quasi-minuscule representations and rational surfaces
We describe the relation between quasi-minuscule representations, polytopes and Weyl group orbits in Picard lattices of rational surfaces. As an application, to each quasi-minuscule representation we attach a class of rational surfaces, and realize such a representation as an associated vector bundle of a principal bundle over these surfaces. Moreover, any quasi-minuscule representation can be defined by rational curves, or their disjoint unions in a rational surface, satisfying certain natural...
Poncelet 5-gons and abelian surfaces.
Positivity results for Euler characteristics of singular surfaces.
Potential theory and Lefschetz theorems for arithmetic surfaces
Poznámka o Clebschově diagonální ploše
Poznámka o parabolické křivce plochy třetího stupně
Poznámky o ploše třetího stupně s oskulačním kuželem
Pre-Tango structures and uniruled varieties
The pre-Tango structure is an ample invertible sheaf of locally exact differentials on a variety of positive characteristic. It is well known that pre-Tango structures on curves often induce pathological uniruled surfaces. We show that almost all pre-Tango structures on varieties induce higher-dimensional pathological uniruled varieties, and that each of these uniruled varieties also has a pre-Tango structure. For this purpose, we first consider the p-closed rational vector field induced...
Primitive Line Bundles on Abelian Threefolds.
Principal polarizations of Prym-Tjurin varieties
Principe de Hasse et approximation faible sur certaines hypersurfaces