Takagi factorization of matrices depending on parameters and locating degeneracies of singular values
Numerical Analysis
2024-02-13 v1 Numerical Analysis
Abstract
In this work we consider the Takagi factorization of a matrix valued function depending on parameters. We give smoothness and genericity results and pay particular attention to the concerns caused by having either a singular value equal to or multiple singular values. For these phenomena, we give theoretical results showing that their co-dimension is , and we further develop and test numerical methods to locate in parameter space values where these occurrences take place. Numerical study of the density of these occurrences is performed.
Keywords
Cite
@article{arxiv.2110.15918,
title = {Takagi factorization of matrices depending on parameters and locating degeneracies of singular values},
author = {Luca Dieci and Alessandra Papini and Alessandro Pugliese},
journal= {arXiv preprint arXiv:2110.15918},
year = {2024}
}