2003/10/06 by Al Vitter, Vitter, Al · 1 citation
Mathematics · #14F05 #14J60 #Advanced Algebra and Geometry #Algebraic Geometry (math.AG) #Algebraic Geometry and Number Theory #FOS: Mathematics #Geometry and complex manifolds #math.AG #msc:14F05 #msc:14J60
paper · pdf · doi:10.48550/arxiv.math/0310073
35 pages,AMSLaTeX
arxiv created 2003/10/06 · openalex publication_date 2003/10/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study rank 3 stable bundles E on P3 as extensions of a line bundle B on a smooth surface S in P3 by the direct sum of three copies of OP3(-ν). In most cases, S (the dependency locus of three sections of E(ν)) lies in the Noether-Lefschetz locus. We give a detailed analysis when S contains a line L and B is constructed from divisors of the form aL+bC for H=L+C a hyperplane section of S. We study the parameter space of this construction and compare it to the full (Gieseker-Maruyama) moduli space. We also analyse the case when B is a power of the hyperplane bundle. The same approach is used to study rank 2 bundles on P3.