Results 61 to 70 of about 22,900 (243)

Approximate inverse preconditioners for linear systems arising from spatial balanced fractional diffusion equations

AIMS Mathematics, 2023
We consider the preconditioned iterative methods for the linear systems arising from the finite volume discretization of spatial balanced fractional diffusion equations where the fractional differential operators are comprised of both Riemann-Liouville ...
Xiaofeng Guo, Jianyu Pan
doaj   +1 more source

Thermal Resistance of 1D Micron‐Wide Interface Under External Force Modulation

Advanced Materials Interfaces, Volume 12, Issue 22, November 22, 2025.
A novel TET‐based technique is developed to characterize the interfacial thermal resistance at the microscale. The interfacial thermal resistance is measured at ≈1200–1400 mK/W for natural contact. Externally applied force reduces the thermal resistance dramatically down to ≈125 mK/W.
Amin Karamati, Wangda Qu, Xianglan Bai, Xinwei Wang   +3 more
wiley   +1 more source

Analytical Treatment of the Oscillating Yukawa Potential

, 2011
Using a suitable Laguerre basis set that ensures a tridiagonal matrix representation of the reference Hamiltonian, we were able to evaluate in closed form the matrix elements of the generalized Yukawa potential with complex screening parameter.
Abdelmonem, Aguilar, Alhaidari, Bahlouli, Balslev, Bayrak, Bayrak, Bayrak, de Meyer, Gonul, H. Bahlouli, Ho, Ikhdair, Ikhdair, Ikhdair, Kar, Lai, Lai, Lam, Lee, M.S. Abdelmonem, Magnus, Maquet, Messina, Nasser, Nasser, Nasser, Patil, Paul, Paul, Paul, Paul, Ray, Reinhardt, S.M. Al-Marzoug, Sever, Sever, Shukla, Siemens, Simon, Singh, Wilczek, Yamani, Yukawa   +43 more
core   +1 more source

Fast numerical algorithms for solving opposite-bordered tridiagonal Toeplitz linear systems and their applications

Results in Applied Mathematics
This paper presents two fast numerical algorithms for solving opposite-bordered tridiagonal Toeplitz linear systems. Both algorithms are designed to solve a system of n equations in linear time.
Hcini Fahd
doaj   +1 more source

The inverse of a tridiagonal matrix

Linear Algebra and its Applications, 2001
The author obtains explicit formulae for the elements of the inverse of a general tridiagonal matrix by deriving the explicit solution of a second-order linear nonhomogeneous difference equation with variable coefficients, and then applying the solution to a boundary value problem with zero boundary values.
openaire   +2 more sources

Dispersion of First Sound in a Weakly Interacting Ultracold Fermi Liquid

Annalen der Physik, Volume 537, Issue 11, November 2025.
 The weak‐interaction, low‐temperature region of the phase diagram of a Fermi gas the so‐called Fermi liquid regime, which has been somewhat overlooked in ultracold gases‐is investigated. Precise and measurable predictions are presented for the viscosity and dispersion of first sound to leading order in the scattering length.
Thomas Repplinger, Songtao Huang, Yunpeng Ji, Nir Navon, Hadrien Kurkjian   +4 more
wiley   +1 more source

Perturbation analysis of eigenvalues for second Dirichlet-Neumann tridiagonal Toeplitz matrices

AIMS Mathematics
This study focused on tridiagonal Toeplitz matrices based on second Dirichlet-Neumann boundary conditions and conducted in-depth research on their eigenvalue sensitivity.
Zhaolin Jiang, Hongxiao Chu, Qiaoyun Miao, Ziwu Jiang   +3 more
doaj   +1 more source

On a Discrete Inverse Problem for Two Spectra

Discrete Dynamics in Nature and Society, 2012
A version of the inverse spectral problem for two spectra of finite-order real Jacobi matrices (tridiagonal symmetric matrices) is investigated. The problem is to reconstruct the matrix using two sets of eigenvalues: one for the original Jacobi matrix ...
Gusein Sh. Guseinov
doaj   +1 more source

Matrix-product ansatz as a tridiagonal algebra [PDF]

Journal of Physics A: Mathematical and Theoretical, 2007
In the matrix-product states approach to interacting multiparticle systems the stationary probability distribution is expressed as a matrix-product state with respect to a quadratic algebra determined by the dynamics of the process. The states involved in the matrix elements are determined by the boundary conditions.
openaire   +1 more source

A Critical Review of Pole Clustering Techniques: Common Pitfalls, Extension to MIMO and New Enhanced Variant of the Cuckoo Search Algorithm

Optimal Control Applications and Methods, Volume 46, Issue 6, Page 2501-2533, November/December 2025.
Enhanced Cuckoo Search for Model Order Reduction ABSTRACT This article presents a critical review of classical and modern pole clustering techniques for model order reduction in high‐order systems. It highlights key limitations and common pitfalls encountered in traditional approaches, especially when extended to Multi‐Input Multi‐Output (MIMO) systems.
Kamel Ben Slimane, Zied Tmar, Mongi Besbes   +2 more
wiley   +1 more source