Results 81 to 90 of about 22,900 (243)
The numerical range of a periodic tridiagonal operator reduces to the numerical range of a finite matrix [PDF]
, 2021 Benjamín A. Itzá‐Ortiz +2 more
openalex +1 more source
Journal of Advances in Modeling Earth Systems, Volume 17, Issue 10, October 2025.Abstract Simulation of turbulence in the atmospheric boundary layer (ABL) is challenging due to the wide range of turbulent scales in the flow. To leverage the currently available computational power for high‐resolution simulation of atmospheric turbulence, fluid solvers that scale well on large compute clusters are required.
L. Huusko +5 more
wiley +1 more source
New norm equalities and inequalities for operator matrices
Journal of Inequalities and Applications, 2016 We prove new inequalities for general 2 × 2 $2\times2$ operator matrices. These inequalities, which are based on classical convexity inequalities, generalize earlier inequalities for sums of operators. Some other related results are also presented. Also,
Feras Ali Bani-Ahmad, Watheq Bani-Domi
doaj +1 more source
Resolving Inhomogeneous Cloud Microphysics Through Cloud‐Top Observations of Blue Corona Discharges
Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.Abstract Understanding cloud‐top microphysics is essential for improving weather forecasting and convection monitoring. In this study, we propose a simplified cloud scattering light model to analyze the influence of inhomogeneities in the cloud microphysical properties on the observations of blue corona discharges (BLUEs) from Atmosphere‐Space ...
Dongshuai Li +7 more
wiley +1 more source
GeoHealth, Volume 9, Issue 9, September 2025.Abstract Most of the United States (US) population resides in cities, where they are subjected to the urban heat island effect. In this study, we develop a method to estimate hourly air temperatures at 0.01°×0.01° $0.01{}^{\circ}\times 0.01{}^{\circ}$ resolution, improving exposure assessment of US population when compared to existing gridded products.
Eva Marquès, Kyle P. Messier
wiley +1 more source
A note on the eigenvalue free intervals of some classes of signed threshold graphs
Special Matrices, 2019 We consider a particular class of signed threshold graphs and their eigenvalues. If Ġ is such a threshold graph and Q(Ġ ) is a quotient matrix that arises from the equitable partition of Ġ , then we use a sequence of elementary matrix operations to prove
Anđelić Milica +2 more
doaj +1 more source
Inverse Spectral Problems for Tridiagonal N by N Complex Hamiltonians
Symmetry, Integrability and Geometry: Methods and Applications, 2009 In this paper, the concept of generalized spectral function is introduced for finite-order tridiagonal symmetric matrices (Jacobi matrices) with complex entries.
Gusein Sh. Guseinov
doaj +1 more source
Polynomial sequences generated by infinite Hessenberg matrices
Special Matrices, 2017 We show that an infinite lower Hessenberg matrix generates polynomial sequences that correspond to the rows of infinite lower triangular invertible matrices. Orthogonal polynomial sequences are obtained when the Hessenberg matrix is tridiagonal. We study
Verde-Star Luis
doaj +1 more source
Parallel Gaussian elimination of a block tridiagonal matrix using multiple microcomputers [PDF]
The solution of a block tridiagonal matrix using parallel processing is demonstrated. The multiprocessor system on which results were obtained and the software environment used to program that system are described.
Blech, Richard A.
core +2 more sources