Name
Abstract | ||
|---|---|---|
The Gauss-Lucas Theorem on the roots of polynomials nicely simplifies the computation of the subderivative and regular subdifferential of the abscissa mapping on polynomials (the maximum of the real parts of the roots). This paper extends this approach to more general functions of the roots. By combining the Gauss-Lucas methodology with an analysis of the splitting behavior of the roots, we obtain characterizations of the subderivative and regular subdifferential for these functions as well. In particular, we completely characterize the subderivative and regular subdifferential of the radius mapping (the maximum of the moduli of the roots). The abscissa and radius mappings are important for the study of continuous and discrete time linear dynamical systems. |
Year | DOI | Venue |
|---|---|---|
2005 | 10.1007/s10107-005-0616-1 | Math. Program. |
Keywords | Field | DocType |
regular subdifferential,variational analysis,gauss-lucas methodology,splitting behavior,linear dynamical system,discrete time,abscissa mapping,radius mapping,real part,gauss-lucas theorem,general function,generating function | Variational analysis,Linear dynamical system,Mathematical optimization,Abscissa,Polynomial,Geometry of roots of real polynomials,Subderivative,Moduli,Discrete time and continuous time,Mathematics | Journal |
Volume | Issue | ISSN |
104 | 2 | 1436-4646 |
Citations | PageRank | References |
2 | 0.42 | 4 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| James V. Burke | 1 | 753 | 113.35 |
| Adrian S. Lewis | 2 | 605 | 66.78 |
| Michael L. Overton | 3 | 634 | 590.15 |