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Projective spaces and hyperquadrics are the simplest projective algebraic varieties, and they can be characterized in many ways. The aim of this paper is to provide a new characterization of them in t...
or a hypersurface in a projective space, we consider the set of pairs of a point and a line in the projective space such that the line intersects the hypersurface at the point with a fixed multiplicit...
Let X be a smooth complex projective variety. A re-cent conjecture of S. Kov´acs states that if the pth-exterior power of the tangent bundle TX contains the pth-exterior power of an am- ple vec...
Let 􀀀 be an e An subgroup of PGLn+1(K), with n  2, where K is a local field with residue field of order q and let Pn K be projective n-space over K. The module of coinvariants H0(􀀀;...

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