Finite-frequency model order reduction of linear and bilinear systems via low-rank approximation

QY Song, U Zulfiqar, X Du - Journal of Computational and Applied …, 2025 - Elsevier
In this paper, we first investigate the finite-frequency model order reduction for linear
systems based on low-rank Gramian approximations. An efficient algorithm for computing …

Low-Rank Methods for Solving Discrete-Time Projected Lyapunov Equations

Y Lin - Mathematics, 2024 - mdpi.com
In this paper, we consider the numerical solution of large-scale discrete-time projected
Lyapunov equations. We provide some reasonable extensions of the most frequently used …

A mixed model reduction method based on the symmetrizer for two classes of dynamical systems

P Yang, B Song, YL Jiang - Applied Mathematical Modelling, 2023 - Elsevier
In regard of the cross Gramian and the block Arnoldi process, this paper focuses on mixed
model reduction for two classes of dynamical systems. By studying the correlation between …

An increasing rank Riemannian method for generalized Lyapunov equations

Z Huang, W Huang - arXiv preprint arXiv:2308.00213, 2023 - arxiv.org
In this paper, we consider finding a low-rank approximation to the solution of a large-scale
generalized Lyapunov matrix equation in the form of $ AXM+ MXA= C $, where $ A $ and …

Neural Network-Based Lyapunov Stability Verification for Continuous-Time Nonlinear Systems via Mixed Integer Linear Programming

J Wang, Y Yu, X Wang, X Feng… - 2024 9th International …, 2024 - ieeexplore.ieee.org
This paper discusses Lyapunov stability verification methods for continuous-time nonlinear
systems. Traditional mathematical methods require a lot of manual calculations, which …

[PDF][PDF] Inexact linear solves in the low-rank alternating direction implicit iteration for large Sylvester equations

P Kürschner - Electronic Transactions on Numerical Analysis, 2024 - etna.ricam.oeaw.ac.at
We consider iteration for approximately solving large-scale algebraic Sylvester equations.
Inside every iteration step of this iterative process, a pair of linear systems of equations has …

Inexact linear solves in the low-rank ADI iteration for large Sylvester equations

P Kürschner - arXiv preprint arXiv:2312.02891, 2023 - arxiv.org
We consider the low-rank alternating directions implicit (ADI) iteration for approximately
solving large-scale algebraic Sylvester equations. Inside every iteration step of this iterative …