Export Citations
Save this search
Please login to be able to save your searches and receive alerts for new content matching your search criteria.
- rapid-communicationJuly 2024
Generalized Halanay inequality and its application to delay differential inclusions
Automatica (Journal of IFAC) (AJIF), Volume 166, Issue Chttps://doi.org/10.1016/j.automatica.2024.111704AbstractIn this work, by using a generalized Halanay inequality, a regular Lyapunov function and the theory of nonsmooth analysis, we investigate the uniformly ultimate boundedness of the zero solution for nonautonomous delay differential inclusions. The ...
- research-articleMarch 2024
Catching-Up Algorithm with Approximate Projections for Moreau’s Sweeping Processes
Journal of Optimization Theory and Applications (JOPT), Volume 203, Issue 2Pages 1160–1187https://doi.org/10.1007/s10957-024-02407-4AbstractIn this paper, we develop an enhanced version of the catching-up algorithm for sweeping processes through an appropriate concept of approximate projection. We establish some properties of this notion of approximate projection. Then, under suitable ...
- research-articleMarch 2024
Long-time behavior of delay differential quasi-variational–hemivariational inequalities and application to contact problems
Zeitschrift für Angewandte Mathematik und Physik (ZAMP) (ZAMP), Volume 75, Issue 2https://doi.org/10.1007/s00033-024-02202-1AbstractIn this article, we study a class of differential quasi-variational–hemivariational inequalities involving time delays. We establish new systems and prove the solvability and the existence of decay solutions. Moreover, we are concerned with long-...
- research-articleOctober 2023
Global stability of first-order methods for coercive tame functions
Mathematical Programming: Series A and B (MPRG), Volume 207, Issue 1-2Pages 551–576https://doi.org/10.1007/s10107-023-02020-9AbstractWe consider first-order methods with constant step size for minimizing locally Lipschitz coercive functions that are tame in an o-minimal structure on the real field. We prove that if the method is approximated by subgradient trajectories, then ...
-
- research-articleSeptember 2023
Upper and lower bounds for the maximal Lyapunov exponent of singularly perturbed linear switching systems
Automatica (Journal of IFAC) (AJIF), Volume 155, Issue Chttps://doi.org/10.1016/j.automatica.2023.111151AbstractIn this paper we consider the problem of determining the stability properties, and in particular assessing the exponential stability, of a singularly perturbed linear switching system. One of the challenges of this problem arises from ...
- research-articleFebruary 2023
Lyapunov stability of the subgradient method with constant step size
Mathematical Programming: Series A and B (MPRG), Volume 202, Issue 1-2Pages 387–396https://doi.org/10.1007/s10107-023-01936-6AbstractWe consider the subgradient method with constant step size for minimizing locally Lipschitz semi-algebraic functions. In order to analyze the behavior of its iterates in the vicinity of a local minimum, we introduce a notion of discrete Lyapunov ...
- research-articleJune 2022
On the Discretization of Truncated Integro-Differential Sweeping Process and Optimal Control
Journal of Optimization Theory and Applications (JOPT), Volume 193, Issue 1-3Pages 785–830https://doi.org/10.1007/s10957-021-01991-zAbstractWe consider the Volterra integro-differential equation with a time-dependent prox-regular constraint that changes in an absolutely continuous way in time (a Volterra absolutely continuous time-dependent sweeping process). The aim of our paper is ...
- research-articleDecember 2021
Necessary Optimality Conditions for Optimal Control Problems in Wasserstein Spaces
Applied Mathematics and Optimization (APMO), Volume 84, Issue Suppl 2Pages 1281–1330https://doi.org/10.1007/s00245-021-09772-wAbstractIn this article, we derive first-order necessary optimality conditions for a constrained optimal control problem formulated in the Wasserstein space of probability measures. To this end, we introduce a new notion of localised metric ...
- research-articleApril 2021
Stochastic Approximation on Riemannian Manifolds
Applied Mathematics and Optimization (APMO), Volume 83, Issue 2Pages 1123–1151https://doi.org/10.1007/s00245-019-09581-2AbstractThe standard theory of stochastic approximation (SA) is extended to the case when the constraint set is a Riemannian manifold. Specifically, the standard ODE method for analyzing SA schemes is extended to iterations constrained to stay on a ...
- research-articleNovember 2020
Finite-Time and Fixed-Time Synchronization of Complex-Valued Recurrent Neural Networks with Discontinuous Activations and Time-Varying Delays
Circuits, Systems, and Signal Processing (CSSP), Volume 39, Issue 11Pages 5406–5428https://doi.org/10.1007/s00034-020-01428-4AbstractThis paper is concerned with finite-time and fixed-time synchronization of complex-valued recurrent neural networks with discontinuous activations and time-varying delays. First, by separating the complex-valued recurrent neural networks into real ...
- rapid-communicationSeptember 2019
Stability of discontinuous homogeneous nonlinear sampled-data systems
Automatica (Journal of IFAC) (AJIF), Volume 107, Issue CPages 467–473https://doi.org/10.1016/j.automatica.2019.06.013AbstractThe article deals with the stability of discontinuous homogeneous nonlinear systems with aperiodic sampled-data inputs. We first extend results about robustness of homogeneous nonlinear systems to the discontinuous case. Then, we prove ...
- articleSeptember 2019
Lyapunov Stability of Differential Inclusions Involving Prox-Regular Sets via Maximal Monotone Operators
Journal of Optimization Theory and Applications (JOPT), Volume 182, Issue 3Pages 906–934https://doi.org/10.1007/s10957-018-1446-7In this paper, we study the existence and the stability in the sense of Lyapunov of differential inclusions governed by the normal cone to a given prox-regular set, which is subject to a Lipschitzian perturbation. We prove that such apparently more ...
- articleMarch 2018
$$L^{\infty }$$Lź estimates on trajectories confined to a closed subset, for control systems with bounded time variation
Mathematical Programming: Series A and B (MPRG), Volume 168, Issue 1-2Pages 201–228https://doi.org/10.1007/s10107-016-1028-0The term `distance estimate' for state constrained control systems refers to an estimate on the distance of an arbitrary state trajectory from the subset of state trajectories that satisfy a given state constraint. Distance estimates have found ...
- articleOctober 2017
Delay-Dependent Passivity and Stability Analysis for a Class of Memristor-Based Neural Networks with Time Delay in the Leakage Term
Neural Processing Letters (NPLE), Volume 46, Issue 2Pages 467–485https://doi.org/10.1007/s11063-017-9594-6This paper is concerned with the problem of passivity and stability analysis for a class of memristor-based neural networks with leakage delay and state-dependent switched memductance functions. By combining differential inclusions with set-valued maps ...
- articleApril 2017
Approximate and Near Weak Invariance for Nonautonomous Differential Inclusions
Journal of Dynamical and Control Systems (KLU-JODS), Volume 23, Issue 2Pages 249–268https://doi.org/10.1007/s10883-016-9312-0Let X be a real Banach space and I a nonempty interval. Let K:IźX$K:I\rightsquigarrow X$ be a multi-function with the graph K$\mathcal {K} $. We give here a characterization for K$\mathcal {K} $ to be approximate/near weakly invariant with respect to ...
- ArticleJune 2016
Mean-Field Limits Beyond Ordinary Differential Equations
Advanced Lectures of the 16th International School on Formal Methods for the Quantitative Evaluation of Collective Adaptive Systems - Volume 9700Pages 61–82https://doi.org/10.1007/978-3-319-34096-8_3We study the limiting behaviour of stochastic models of populations of interacting agents, as the number of agents goes to infinity. Classical mean-field results have established that this limiting behaviour is described by an ordinary differential ...
- research-articleJune 2016
A refinement of Matrosov's theorem for differential inclusions
Automatica (Journal of IFAC) (AJIF), Volume 68, Issue CPages 378–383https://doi.org/10.1016/j.automatica.2016.02.008This note presents a refinement of Matrosov's theorem for a class of differential inclusions whose set-valued map is defined as a closed convex hull of finitely many vector fields. This class of systems may arise in the analysis of switched nonlinear ...
- research-articleApril 2016
New conditions on synchronization of memristor-based neural networks via differential inclusions
Neurocomputing (NEUROC), Volume 186, Issue CPages 235–250https://doi.org/10.1016/j.neucom.2015.12.084In this paper, a general framework named Filippov-framework and some new analytic techniques are presented for dealing with the exponential synchronization of memristor-based neural network system with time-varying delay. Several new sufficient ...