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20022009
most citedExtended Theories of Gravity and their Cosmological and Astrophysical Applications

891 citations

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8 papers · 1 filter

math.AG2008

Hilbert-Chow morphism for non commutative Hilbert schemes and moduli spaces of linear representations

Federica Galluzzi, Francesco Vaccarino

Let be a commutative ring and let be a commutative algebra. The aim of this paper is to define and discuss some connection morphisms between schemes associated to the r…

math.AG20086 cited

The Euler characteristic as a polynomial in the Chern classes

Cristina Bertone

In this paper we obtain some explicit expressions for the Euler characteristic of a rank n coherent sheaf F on P^N and of its twists F(t) as polynomials in the Chern classes c_i(F)…

math.AG20082 cited

A splitting criterion for vector bundles on blowing ups of the plane

Edoardo Ballico, Francesco Malaspina

Let be the blowing-up of distinct points and a vector bundle on . Here we give a cohomological criterio which is equivalent to $E \cong f_s^…

math.AG2008

A Few Splitting Criteria for Vector Bundles

Francesco Malaspina

We prove a few splitting criteria for vector bundles on a quadric hypersurface and Grassmannians. We give also some cohomological splitting conditions for rank 2 bundles on multipr…

math.AG2008

Complete intersections on general hypersurfaces

E. Carlini, L. Chiantini, A. V. Geramita

We ask when certain complete intersections of codimension can lie on a generic hypersurface in $\PP^n$. We give a complete answer to this question when in terms o…

math.AG2007

Vector bundles on Hirzebruch surfaces whose twists by a non-ample line bundle have natural cohomology

E. Ballico, F. Malaspina

Here we study vector bundles on the Hirzebruch surface such that their twists by a spanned, but not ample, line bundle have natural cohomol…