Necessary and Sufficient Second-Order Optimality Conditions on Hadamard Manifolds

This work is intended to lead a study of necessary and sufficient optimality conditions for scalar optimization problems on Hadamard manifolds. In the context of this geometry, we obtain and present new function types characterized by the property of having all their second-order stationary points b...

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Main Authors: Gabriel Ruiz-Garzón, Jaime Ruiz-Zapatero, Rafaela Osuna-Gómez, Antonio Rufián-Lizana
Format: Article
Language:English
Published: MDPI AG 2020-07-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/8/7/1152
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author Gabriel Ruiz-Garzón
Jaime Ruiz-Zapatero
Rafaela Osuna-Gómez
Antonio Rufián-Lizana
author_facet Gabriel Ruiz-Garzón
Jaime Ruiz-Zapatero
Rafaela Osuna-Gómez
Antonio Rufián-Lizana
author_sort Gabriel Ruiz-Garzón
collection DOAJ
description This work is intended to lead a study of necessary and sufficient optimality conditions for scalar optimization problems on Hadamard manifolds. In the context of this geometry, we obtain and present new function types characterized by the property of having all their second-order stationary points be global minimums. In order to do so, we extend the concept convexity in Euclidean space to a more general notion of invexity on Hadamard manifolds. This is done employing notions of second-order directional derivatives, second-order pseudoinvexity functions, and the second-order Karush–Kuhn–Tucker-pseudoinvexity problem. Thus, we prove that every second-order stationary point is a global minimum if and only if the problem is either second-order pseudoinvex or second-order KKT-pseudoinvex depending on whether the problem regards unconstrained or constrained scalar optimization, respectively. This result has not been presented in the literature before. Finally, examples of these new characterizations are provided in the context of “Higgs Boson like” potentials, among others.
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spelling doaj.art-0c9ba23dd157488ebbf8feeeba3f76962023-11-20T06:42:50ZengMDPI AGMathematics2227-73902020-07-0187115210.3390/math8071152Necessary and Sufficient Second-Order Optimality Conditions on Hadamard ManifoldsGabriel Ruiz-Garzón0Jaime Ruiz-Zapatero1Rafaela Osuna-Gómez2Antonio Rufián-Lizana3Instituto de Desarrollo Social y Sostenible (INDESS), Universidad de Cádiz,11003 Cádiz, SpainDepartment of Physics and Astronomy, University College London, London WC1E 6BT, UKDepartamento de Estadística e I.O., Universidad de Sevilla, 41004 Sevilla, SpainDepartamento de Estadística e I.O., Universidad de Sevilla, 41004 Sevilla, SpainThis work is intended to lead a study of necessary and sufficient optimality conditions for scalar optimization problems on Hadamard manifolds. In the context of this geometry, we obtain and present new function types characterized by the property of having all their second-order stationary points be global minimums. In order to do so, we extend the concept convexity in Euclidean space to a more general notion of invexity on Hadamard manifolds. This is done employing notions of second-order directional derivatives, second-order pseudoinvexity functions, and the second-order Karush–Kuhn–Tucker-pseudoinvexity problem. Thus, we prove that every second-order stationary point is a global minimum if and only if the problem is either second-order pseudoinvex or second-order KKT-pseudoinvex depending on whether the problem regards unconstrained or constrained scalar optimization, respectively. This result has not been presented in the literature before. Finally, examples of these new characterizations are provided in the context of “Higgs Boson like” potentials, among others.https://www.mdpi.com/2227-7390/8/7/1152Hadamard manifoldsecond-order optimality conditionsgeneralized convexity
spellingShingle Gabriel Ruiz-Garzón
Jaime Ruiz-Zapatero
Rafaela Osuna-Gómez
Antonio Rufián-Lizana
Necessary and Sufficient Second-Order Optimality Conditions on Hadamard Manifolds
Mathematics
Hadamard manifold
second-order optimality conditions
generalized convexity
title Necessary and Sufficient Second-Order Optimality Conditions on Hadamard Manifolds
title_full Necessary and Sufficient Second-Order Optimality Conditions on Hadamard Manifolds
title_fullStr Necessary and Sufficient Second-Order Optimality Conditions on Hadamard Manifolds
title_full_unstemmed Necessary and Sufficient Second-Order Optimality Conditions on Hadamard Manifolds
title_short Necessary and Sufficient Second-Order Optimality Conditions on Hadamard Manifolds
title_sort necessary and sufficient second order optimality conditions on hadamard manifolds
topic Hadamard manifold
second-order optimality conditions
generalized convexity
url https://www.mdpi.com/2227-7390/8/7/1152
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