Title
Duality of Multiple Root Loci
Abstract
The multiple root loci among univariate polynomials of degree n are indexed by partitions of n. We study these loci and their conormal varieties. The projectively dual varieties are joins of such loci where the partitions are hooks. Our emphasis lies on equations and parametrizations that are useful for Euclidean distance optimization. We compute the ED degrees for hooks. Among the dual hypersurfaces are those that demarcate the set of binary forms whose real rank equals the generic complex rank.
Year
DOI
Venue
2015
10.1016/j.jalgebra.2015.08.029
Journal of Algebra
Keywords
Field
DocType
Multiple root,Dual variety,Conormal variety,Real rank,ED degree
Discrete mathematics,Joins,Combinatorics,Polynomial,Euclidean distance,Duality (optimization),Univariate,Locus (genetics),Mathematics,Binary number
Journal
Volume
ISSN
Citations 
446
0021-8693
3
PageRank 
References 
Authors
0.51
5
2
Name
Order
Citations
PageRank
hwangrae lee130.51
Bernd Sturmfels2926136.85