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This work investigates the exponential stability of neural networks (NNs) systems with time delays. By considering orthogonal polynomials with weighted terms, a new weighted integral inequality is presented. This inequality extend several…

泛函分析 · 数学 2024-12-12 Yuanyuan Zhang , Han Xue , Kachong Lao , Chonkit Chan , Chenyang Shi , Seakweng Vong

This manuscript deals with the stability and bifurcation analysis of the equation $D^{2\alpha}x(t)+c D^{\alpha}x(t)=a x(t)+b x(t-\tau)$, where $0<\alpha<1$ and $\tau>0$. We sketch the boundaries of various stability regions in the parameter…

动力系统 · 数学 2024-04-03 Sachin Bhalekar , Deepa Gupta

In this paper, the problem of finding state bounds is considered, for the first time, for a class of positive time-delay coupled differential-difference equations (CDDEs) with bounded disturbances. First, we present a novel method, which is…

最优化与控制 · 数学 2018-09-03 Phan Thanh Nam , Thi-Hiep Luu

Generalization is one of the fundamental issues in machine learning. However, traditional techniques like uniform convergence may be unable to explain generalization under overparameterization. As alternative approaches, techniques based on…

机器学习 · 计算机科学 2022-03-22 Jiaye Teng , Jianhao Ma , Yang Yuan

We study bounded, unbounded and blow-up solutions of a delay logistic equation without assuming the dominance of the instantaneous feedback. It is shown that there can exist an exponential (thus unbounded) solution for the nonlinear…

动力系统 · 数学 2017-09-22 István Győri , Yukihiko Nakata , Gergely Röst

In this paper, we present a novel framework for quantifying a lower bound on resilience in continuous-time (non)linear systems subject to external disturbances while ensuring satisfaction of signal temporal logic specifications. Unlike…

系统与控制 · 电气工程与系统科学 2026-04-17 Ratnangshu Das , Negar Monir , Youssef Ait Si , Adnane Saoud , Sadegh Soudjani , Pushpak Jagtap

Long-term memory is a feature observed in systems ranging from neural networks to epidemiological models. The memory in such systems is usually modeled by the time delay. Furthermore, the nonlocal operators, such as the "fractional order…

动力系统 · 数学 2023-05-12 Divya D. Joshi , Sachin Bhalekar , Prashant M. Gade

Results on the problem of stabilizing a nonlinear continuous-time system by a finite number of control or measurement values are presented. The basic tool is a discontinuous version of the so-called semi-global backstepping lemma. We derive…

最优化与控制 · 数学 2010-04-13 C. De Persis

A common problem to all applications of linear finite dynamical systems is analyzing the dynamics without enumerating every possible state transition. Of particular interest is the long term dynamical behaviour. In this paper, we study the…

动力系统 · 数学 2019-04-01 Björn Lindenberg

Nonlinear partial differential equations are central to physics, engineering, and finance. Except in a limited number of integrable cases, their solution generally requires numerical methods whose cost becomes prohibitive in…

流体动力学 · 物理学 2026-03-30 Javier Gonzalez-Conde , Daniel Isla , Sergiy Zhuk , Mikel Sanz

In this paper we analyze a coupled system between a transport equation and an ordinary differential equation with time delay (which is a simplified version of a model for kidney blood flow control). Through a careful spectral analysis we…

偏微分方程分析 · 数学 2020-07-20 Serge Nicaise , Alessandro Paolucci , Cristina Pignotti

The evolution of two isothermal, incompressible, immiscible fluids in a bounded domain is governed by Cahn-Hilliard-Navier-Stokes equations (CHNS System). In this work, we study the well-posedness results for the CHNS system with…

偏微分方程分析 · 数学 2025-10-28 Manika Bag , Tania Biswas , Sheetal Dharmatti

Learning how complex dynamical systems evolve over time is a key challenge in system identification. For safety critical systems, it is often crucial that the learned model is guaranteed to converge to some equilibrium point. To this end,…

机器学习 · 计算机科学 2021-12-13 Andreas Schlaginhaufen , Philippe Wenk , Andreas Krause , Florian Dörfler

Strong stability, defined by bounds that decay not only over time but also with the number of impulses, has been established as a requirement to ensure robustness properties for impulsive systems with respect to inputs or disturbances. Most…

系统与控制 · 电气工程与系统科学 2024-08-22 Alexis J. Vallarella , José Luis Mancilla-Aguilar , Hernan Haimovich

We study boundary regularity of viscosity solutions to fully nonlinear degenerate or singular parabolic equations. The gradient-dependent degeneracy or singularity, along with the time derivative, introduces significant challenges beyond…

偏微分方程分析 · 数学 2025-09-24 Hyungsung Yun

In this work, we investigate the inverse problem of determining a quasilinear term appearing in a nonlinear elliptic equation from the measurement of the conormal derivative on the boundary. This problem arises in several practical…

偏微分方程分析 · 数学 2025-04-15 Jason Choy , Maolin Deng , Bangti Jin , Yavar Kian

In [2] we introduced a method combining together an observability inequality and a spectral decomposition to get a logarithmic stability estimate for the inverse problem of determining both the potential and the damping coefficient in a…

偏微分方程分析 · 数学 2015-05-28 Kais Ammari , Mourad Choulli

A nonlinear inequality is formulated in the paper. An estimate of the rate of growth/decay of solutions to this inequality is obtained. This inequality is of interest in a study of dynamical systems and nonlinear evolution equations. It can…

经典分析与常微分方程 · 数学 2010-01-29 N. S. Hoang , A. G. Ramm

Fractional derivative and delay are important tools in modeling memory properties in the natural system. This work deals with the stability analysis of a fractional order delay differential equation \begin{equation*} D^\alpha x(t)=\delta…

动力系统 · 数学 2022-08-29 Sachin Bhalekar , Deepa Gupta

In this paper, we study the application of switched systems stability criteria to derive delay-dependent conditions for systems affected by both a constant and a time-varying delay. The main novelty of our approach lies on the use of…