A Sequential Quadratic Programming Algorithm for Nonsmooth Problems with Upper- Objective

J Wang, CG Petra - SIAM Journal on Optimization, 2023 - SIAM
An optimization algorithm for nonsmooth nonconvex constrained optimization problems with
upper-objective functions is proposed and analyzed. Upper-is a weakly concave property …

Nonsmooth bundle trust-region algorithm with applications to robust stability

P Apkarian, D Noll, L Ravanbod - Set-Valued and variational analysis, 2016 - Springer
We propose a bundle trust-region algorithm to minimize locally Lipschitz functions which are
potentially nonsmooth and nonconvex. We prove global convergence of our method and …

[HTML][HTML] Rothe method for parabolic variational–hemivariational inequalities

K Bartosz, X Cheng, P Kalita, Y Yu, C Zheng - Journal of Mathematical …, 2015 - Elsevier
The paper deals with the convergence analysis of the semidiscrete Rothe scheme for the
parabolic variational–hemivariational inequality with the nonlinear pseudomonotone elliptic …

A new infeasible proximal bundle algorithm for nonsmooth nonconvex constrained optimization

N Hoseini Monjezi, S Nobakhtian - Computational Optimization and …, 2019 - Springer
Proximal bundle method has usually been presented for unconstrained convex optimization
problems. In this paper, we develop an infeasible proximal bundle method for nonsmooth …

A bundle trust region algorithm for minimizing locally Lipschitz functions

NH Monjezi - SIAM Journal on Optimization, 2023 - SIAM
We propose a new algorithm for minimizing locally Lipschitz functions that combines both
the bundle and trust region techniques. Based on the bundle methods the objective function …

Nonsmooth and nonconvex optimization via approximate difference-of-convex decompositions

W Van Ackooij, W De Oliveira - Journal of Optimization Theory and …, 2019 - Springer
We propose an optimization technique for computing stationary points of a broad class of
nonsmooth and nonconvex programming problems. The proposed approach …

Noncoercive variational–hemivariational inequalities: existence, approximation by double regularization, and application to nonmonotone contact problems

O Chadli, J Gwinner, MZ Nashed - Journal of Optimization Theory and …, 2022 - Springer
We study noncoercive nonlinear variational–hemivariational inequalities that encompass
semicoercive nonlinear monotone variational inequalities and pseudomonotone variational …

From the Fan-KKM principle to extended real-valued equilibria and to variational-hemivariational inequalities with application to nonmonotone contact problems

J Gwinner - Fixed Point Theory and Algorithms for Sciences and …, 2022 - Springer
This paper starts off by the celebrated Knaster–Kuratowski–Mazurkiewicz principle in the
formulation by Ky Fan. We provide a novel variant of this principle and build an existence …

Convergence of the proximal bundle algorithm for nonsmooth nonconvex optimization problems

N Hoseini Monjezi, S Nobakhtian - Optimization Letters, 2022 - Springer
A proximal bundle algorithm is proposed for solving unconstrained nonsmooth nonconvex
optimization problems. At each iteration, using already generated information, the algorithm …

Non-smooth optimization for robust control of infinite-dimensional systems

P Apkarian, D Noll, L Ravanbod - Set-Valued and Variational Analysis, 2018 - Springer
We use a non-smooth trust-region method for H∞-control of infinite-dimensional systems.
Our method applies in particular to distributed and boundary control of partial differential …