Results 31 to 40 of about 1,032 (207)

Subdifferentials, faces, and dual matrices [PDF]

open access: yes, 1993
A characterization of the dual matrices for the unitarily invariant norms is given. Moreover, the connection between the dual matrices, the subdifferentials of matrix norms, and the faces of the unit ball of matrices is ...
Ziȩtak, K.
core   +1 more source

On Directionally Dependent Subdifferentials [PDF]

open access: yes, 2010
In this paper directionally contextual concepts of variational analysis, based on dual-space constructions similar to those in [4, 5], are introduced and studied. As an illustration of their usefulness, necessary and also sufficient optimality conditions
Mordukhovich, Boris S, Ginchev, Ivan
core   +1 more source

Min–sup-type zero duality gap properties for DC composite optimization problem

open access: yesJournal of Inequalities and Applications, 2019
In this paper, we present min–sup-type zero duality gap properties for DC composite optimization problem with conic constraints. Using properties of the subdifferentials of involved functions, we introduce some new constraint qualifications.
Li Ping Tian, Dong Hui Fang
doaj   +1 more source

Generalized Euler identity for subdifferentials of homogeneous functions and applications [PDF]

open access: yes, 2008
In this paper, we mainly consider subdifferentials and basic subdifferentials of homogeneous functions defined on real Banach space and Asplund space respectively, and obtain the generalized Euler identity.
Wei, Zhou, Yang, Fuchun
core   +1 more source

Automatic differentiation rules for Tsoukalas–Mitsos convex relaxations in global process optimization

open access: yesDigital Chemical Engineering, 2023
With increasing digitalization and vertical integration of chemical process systems, nonconvex optimization problems often emerge in chemical engineering applications, yet require specialized optimization techniques.
Yingwei Yuan, Kamil A. Khan
doaj   +1 more source

Directional Subdifferentials and Optimality Conditions [PDF]

open access: yes, 2011
This paper is devoted to the introduction and development of new dual-space constructions of generalized differentiation in variational analysis, which combine certain features of subdifferentials for nonsmooth functions (resp.
Mordukhovich, Boris S, Ginchev, Ivan
core   +2 more sources

Directed Subdifferentiable Functions and the Directed Subdifferential Without Delta-Convex Structure [PDF]

open access: yesJournal of Optimization Theory and Applications, 2013
We show that the directed subdifferential introduced for differences of convex (delta-convex, DC) functions by Baier and Farkhi can be constructed from the directional derivative without using any information on the DC structure of the function.
Robert Baier   +2 more
openaire   +2 more sources

Integration of Fenchel subdifferentials revisited

open access: yes, 2021
We obtain a simple integration formula for the Fenchel subdifferentials on Euclidean spaces and analyze some of its consequences.
Martínez Legaz, Juan Enrique
core  

Error Bound for Conic Inequality in Hilbert Spaces

open access: yesAbstract and Applied Analysis, 2014
We consider error bound issue for conic inequalities in Hilbert spaces. In terms of proximal subdifferentials of vector-valued functions, we provide sufficient conditions for the existence of a local error bound for a conic inequality.
Jiangxing Zhu, Qinghai He, Jinchuan Lin
doaj   +1 more source

Multivalued nonmonotone dynamic boundary condition

open access: yesBoundary Value Problems, 2021
In this paper, we introduce a new class of hemivariational inequalities, called dynamic boundary hemivariational inequalities, reflecting the fact that the governing operator is also active on the boundary.
Khadija Aayadi   +3 more
doaj   +1 more source

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