Results 101 to 110 of about 1,319 (203)

Multipreconditioned GMRES for simulating stochastic automata networks

Open Mathematics, 2018
Stochastic Automata Networks (SANs) have a large amount of applications in modelling queueing systems and communication systems. To find the steady state probability distribution of the SANs, it often needs to solve linear systems which involve their ...
Wen Chun, Huang Ting-Zhu, Gu Xian-Ming, Shen Zhao-Li, Zhang Hong-Fan, Liu Chen   +5 more
doaj   +1 more source

Bayesian Adaptive Polynomial Chaos Expansions

Stat, Volume 15, Issue 1, March 2026.
ABSTRACT Polynomial chaos expansions (PCEs) are widely used for uncertainty quantification (UQ) tasks, particularly in the applied mathematics community. However, PCE has received comparatively less attention in the statistics literature, and fully Bayesian formulations remain rare—especially with implementations in R.
Kellin N. Rumsey, Devin Francom, Graham Gibson, J. Derek Tucker, Gabriel Huerta   +4 more
wiley   +1 more source

The construction of Jacobi and periodic Jacobi matrices with prescribed spectra [PDF]

Mathematics of Computation, 1980
The spectral properties of Jacobi and periodic Jacobi matrices are analyzed and algorithms for the construction of Jacobi and periodic Jacobi matrices with prescribed spectra are presented. Numerical evidence demonstrates that these algorithms are of practical utility.
openaire   +1 more source

A Thermodynamic Framework for Turing‐Type Instabilities in Porous Media: Part I Theory

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 3, March 2026.
Abstract Pattern formation in geological materials is commonly described using analogies to Turing‐type reaction–diffusion systems, yet a unifying thermodynamic explanation remains elusive. Here we develop a multiscale, thermodynamically consistent framework for pattern‐forming instabilities in porous media undergoing coupled thermo–hydro–mechanical ...
Klaus Regenauer‐Lieb, Manman Hu, Qingpei Sun, Chong Liu, Zhennan Zhu, Victor Calo   +5 more
wiley   +1 more source

The spectrum of Jacobi matrices

Inventiones mathematicae, 1976
Let L be a periodic symmetric tridiagonal matrix of size N; "periodic" means that L has one extra-entry in the upper right corner and by symmetry in the lower left one. Let b i be the diagonal and ai the subdiagonal entries. The present paper deals with the space ~ ' of such matrices with a given spectrum.
openaire   +2 more sources

Safety and Efficacy of Nerandomilast in Patients With Pulmonary Fibrosis: A Systematic Review and Meta‐Analysis of Randomized Controlled Trials

The Clinical Respiratory Journal, Volume 20, Issue 3, March 2026.
Nerandomilast appears to slow lung function decline and reduce mortality in pulmonary fibrosis without added safety risks. It may represent a valuable adjunct to existing antifibrotics or a standalone therapy for patients intolerant to standard treatment.
Humna Shahzad, Usama Afzaal, Fahad Saleem, Ahmad Hassan Gul, Freya Thummar, Hafiz Nadir Murtaza, Abel Gelan, Maria Ahsan, Rafay Irfan, Ahmad Nawaz, Uzair Jafar, Asma'a Munasar Ali Alsubari, Muhammad Ehsan, Ahmed Nadeem, Praveen Kumar Komminni, Juan Iribarren   +15 more
wiley   +1 more source

Scattering theory for difference equations with operator coefficients

Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract We investigate a class of second‐order difference equations featuring operator‐valued coefficients with the aim of approaching problems of stationary scattering theory. We focus on various compact perturbations of the discrete Laplacian given in a Hilbert space of bi‐infinite square‐summable sequences with entries from a fixed Hilbert space ...
David Sher, Luis Silva, Boris Vertman, Monika Winklmeier   +3 more
wiley   +1 more source

On moments of the derivative of CUE characteristic polynomials and the Riemann zeta function

Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract We study the derivative of the characteristic polynomial of N×N$N \times N$ Haar‐distributed unitary matrices. We obtain new explicit formulae for complex‐valued moments when the spectral variable is inside the unit disc, in the limit N→∞$N \rightarrow \infty$.
Nicholas Simm, Fei Wei
wiley   +1 more source

Combined Matrix of a Tridiagonal Toeplitz Matrix

Axioms
In this work, combined matrices of tridiagonal Toeplitz matrices are studied. The combined matrix is known as the Relative Gain Array in control theory.
Begoña Cantó, Rafael Cantó, Ana Maria Urbano   +2 more
doaj   +1 more source

Unitary ensembles with a critical edge point, their multiplicative statistics, and the Korteweg‐de‐Vries hierarchy

Journal of the London Mathematical Society, Volume 113, Issue 3, March 2026.
Abstract We study the multiplicative statistics associated to the limiting determinantal point process describing eigenvalues of unitary random matrices with a critical edge point, where the limiting eigenvalue density vanishes like a power 5/2. We prove that these statistics are governed by the first three equations of the Korteweg‐de‐Vries (KdV ...
Mattia Cafasso, Carla Mariana da Silva Pinheiro   +1 more
wiley   +1 more source