Displaying similar documents to “Nef value of homogeneous line bundles and related vanishing theorems.”

Resolutions of homogeneous bundles on 2

Giorgio Ottaviani, Elena Rubei (2005)

Annales de l’institut Fourier

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We characterize minimal free resolutions of homogeneous bundles on 2 . Besides we study stability and simplicity of homogeneous bundles on 2 by means of their minimal free resolutions; in particular we give a criterion to see when a homogeneous bundle is simple by means of its minimal resolution in the case the first bundle of the resolution is irreducible.

On simple and stable homogeneous bundles

Simona Faini (2006)

Bollettino dell'Unione Matematica Italiana

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In this work we will analyze the relation between the stability and the simplicity of a homogeneous vector bundle on a projective variety. Our main theorem shows that a homogeneous bundle is not destabilized by its homogeneous subbundles if and only if it is the tensor product of a stable homogeneous bundle and an irreducible representation. Then we give an example of a homogeneous bundle, which is simple, but not stable.