Bounds on Castelnuovo-Mumford Regularity for Divisors on Rational Normal Scrolls

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Abstract

The Castelnuovo-Mumford regularity is one of the most important invariants in studying the minimal free resolution of the defining ideas of the projective varieties. There are some bounds on the Castelnuovo-Mumford regularity of the projective variety in terms of the other basic invariants such as dimension, codimension and degree. This paper studies a bound on the regularity conjectured by Hoa, and shows this bound and extremal examples in the case of divisors on rational normal scrolls.

Journal

  • Collectanea Mathematica

    Collectanea Mathematica (56), 97-102, 2005

    Springer Verlag

Keywords

Codes

  • NII Article ID (NAID)
    120006325362
  • Text Lang
    ENG
  • Article Type
    journal article
  • ISSN
    0010-0757
  • Data Source
    IR 
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