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We treat the stability issue for the three dimensional inverse imaging modality called Quantitative Photoacoustic Tomography. We provide universal choices of the illuminations which enable to recover, in a H\"older stable fashion, the…

偏微分方程分析 · 数学 2015-05-15 Giovanni Alessandrini , Michele Di Cristo , Elisa Francini , Sergio Vessella

This paper proposes a computer-assisted solution existence verification method for the stationary Navier-Stokes equation over general 3D domains. The proposed method verifies that the exact solution as the fixed point of the Newton…

数值分析 · 数学 2022-02-09 Xuefeng Liu , Mitsuhiro T. Nakao , Shin'ichi Oishi

We discuss the analysis and stability of a family of cross-diffusion boundary value problems with nonlinear diffusion and drift terms. We assume that these systems are close, in a suitable sense, to a set of decoupled and linear problems.…

偏微分方程分析 · 数学 2018-07-16 Luca Alasio , Maria Bruna , Yves Capdeboscq

This paper is intended to review recent results and open problems concerning the existence of steady states to the Maxwell-Schr\"odinger system. A combination of tools, proofs and results are presented in the framework of the…

偏微分方程分析 · 数学 2013-06-18 Isabelle Catto , Jean Dolbeault , Óscar Sánchez , Juan Soler

We provide a computer-assisted approach to ensure that a given continuous or discrete-time polynomial system is (asymptotically) stable. Our framework relies on constructive analysis together with formally certified sums of squares Lyapunov…

最优化与控制 · 数学 2024-08-02 Grigory Devadze , Victor Magron , Stefan Streif

The necessary and sufficient conditions for the stability of adiabatic states in three-level quantum systems are investigated analytically and numerically. Various possible configurations of three-level systems under exact two-photon…

量子物理 · 物理学 2025-09-16 Emil A. Gazazyan , Gayane G. Grigoryan , Vanush Paturyan

In our recent work on iterative computation in hardware, we showed that arbitrary-precision solvers can perform more favorably than their traditional arithmetic equivalents when the latter's precisions are either under- or over-budgeted for…

数值分析 · 数学 2020-10-20 He Li , Ian McInerney , James J. Davis , George A. Constantinides

We derive sufficient conditions for the solvability of the state estimation problem for a class of nonlinear control time-varying systems which includes those, whose dynamics have triangular structure. The state estimation is exhibited by…

最优化与控制 · 数学 2018-06-07 John Tsinias , Constantinos Kitsos

A cross-diffusion system modeling the information herding of individuals is analyzed in a bounded domain with no-flux boundary conditions. The variables are the species' density and an influence function which modifies the information state…

偏微分方程分析 · 数学 2018-12-24 Ansgar Jüngel , Christian Kuehn , Lara Trussardi

We develop a stable and efficient numerical scheme for modeling the optical field evolution in a nonlinear dispersive cavity with counter propagating waves and complex, semiconductor physics gain dynamics that are expensive to evaluate. Our…

The question of biological stability (permanence) of a replicator reaction-diffusion system is considered. Sufficient conditions of biological stability are found. It is proved that there are situations when biologically unstable…

种群与进化 · 定量生物学 2014-06-24 Alexander S. Bratus , Artem S. Novozhilov , Vladimir P. Posvyanskii

Due to the use of huge number of sensors and the increasing use of communication networks, cyber-physical systems (CPS) are becoming vulnerable to cyber-attacks. The ever-increasing complexity of CPS bring up the need for data-driven…

系统与控制 · 电气工程与系统科学 2021-02-12 Amirreza Jafari , Farzad Darbandi , Hadis Karimipour

We investigate the existence and instability of a class of blowing-up positive steady states arising in a shadow system of the Shigesada-Kawasaki-Teramoto (SKT) two-species competition model, as well as in the corresponding perturbed SKT…

偏微分方程分析 · 数学 2025-11-20 Kousuke Kuto , Yaping Wu

This paper analyzes the stability of a reactiondiffusion equation coupled with a finite-dimensional controller through Dirichlet boundary input and Neumann boundary output. Going against the flow, we intend to propose numerical certificates…

最优化与控制 · 数学 2023-03-09 Mathieu Bajodek , Hugo Lhachemi , Giorgio Valmorbida

We introduce a two-state non-conserving driven-diffusive system in one-dimension under a discrete-time updating scheme. We show that the steady-state of the system can be obtained using a matrix product approach. On the other hand, the…

统计力学 · 物理学 2014-03-07 S. R. Masharian , F. H. Jafarpour , A. Aghamohammadi

In this paper, we use the restricted three body problem in the binary stellar systems, taking photogravitational effects of both the stars. The aim of this study is to investigate the motion of the infinitesimal mass in the vicinity of the…

太阳与恒星天体物理 · 物理学 2016-09-21 Rajib Mia , Badam Singh Kushvah

Understanding dissipation in 2D quantum many-body systems is a remarkably difficult open challenge. Here we show how numerical simulations for this problem are possible by means of a tensor network algorithm that approximates steady-states…

强关联电子 · 物理学 2017-11-27 Augustine Kshetrimayum , Hendrik Weimer , Roman Orus

We study steady-state thin films on a chemically heterogeneous substrates of finite size, subject to no-flux boundary conditions. Based on the structure of the bifurcation diagram, we classify the one-dimensional steady-state solutions that…

流体动力学 · 物理学 2021-11-16 Weifan Liu , Thomas P. Witelski

We study flow driven through a finite-length planar rigid channel by a fixed upstream flux, where a segment of one wall is replaced by a pre-stressed elastic beam subject to uniform external pressure. The steady and unsteady systems are…

流体动力学 · 物理学 2021-11-24 Danyang Wang , Xiaoyu Luo , Peter S. Stewart

The three-body Lennard-Jones system on the plane has a transition state, which is the straight conformation located at a saddle point of the potential energy landscape. We show that the transition state can be dynamically stabilized by…

混沌动力学 · 物理学 2024-09-04 Yoshiyuki Y. Yamaguchi