0000000000181465

AUTHOR

José Carlos Sierra

0000-0002-1789-7550

showing 4 related works from this author

Classification of n-dimensional subvarieties of G(1, 2n) that can be projected to G(1, n + 1)

2005

A structure theorem is given for n-dimensional smooth subvarieties of the Grassmannian G(1, N); with N >= n + 3, that can be isomorphically projected to G(1, n + 1). A complete classification in the cases N = 2n + 1 and N = 2n follows, as a corollary.

Discrete mathematicsCombinatoricsMathematics::Algebraic GeometryCorollaryN dimensionalGeneral MathematicsGrassmannianSettore MAT/03 - GeometriaStructured program theoremMathematicsGrassmannians projections
researchProduct

On globally generated vector bundles on projective spaces

2009

AbstractA classification is given for globally generated vector bundles E of rank k on Pn having first Chern class c1(E)=2. In particular, we get that they split if k<n unless E is a twisted null-correlation bundle on P3. In view of the well-known correspondence between globally generated vector bundles and maps to Grassmannians, we obtain, as a corollary, a classification of double Veronese embeddings of Pn into a Grassmannian G(k−1,N) of (k−1)-planes in PN.

Mathematics::Algebraic GeometryAlgebra and Number TheoryGrassmannians rank-2 bundlesSettore MAT/03 - Geometria
researchProduct

On double Veronese embeddings in the Grassmannian G(1,N)

2004

We classify all the embeddings of P^n in a Grassmannian of lines G(1,N) such that the composition with Pl\"ucker is given by a linear system of quadrics of P^n.

Veronese embeddingsGeneral MathematicsLinear systemComposition (combinatorics)CombinatoricsAlgebra14M15 (Primary) 14M07 (Secondary)rank-2 bundlesMathematics - Algebraic GeometryGrassmannianFOS: MathematicsSettore MAT/03 - GeometriaGrassmanniansPluckerAlgebraic Geometry (math.AG)Mathematics
researchProduct

On globally generated vector bundles on projective spaces II

2014

Extending a previous result of the authors, we classify globally generated vector bundles on projective spaces with first Chern class equal to three.

Pure mathematicsAlgebra and Number TheoryChern–Weil homomorphismChern classComplex projective spaceMathematical analysisVector bundleMathematics - Algebraic GeometryLine bundleFOS: MathematicsProjective spaceTodd classSettore MAT/03 - GeometriaAlgebraic Geometry (math.AG)Splitting principleMathematicsGlobally generated Vector bundles Projective Space
researchProduct