Results 21 to 30 of about 502,287 (194)

Random matrix ensembles with split limiting behavior [PDF]

open access: yesRandom Matrices: Theory and Applications, 2018
We introduce a new family of [Formula: see text] random real symmetric matrix ensembles, the [Formula: see text]-checkerboard matrices, whose limiting spectral measure has two components which can be determined explicitly. All but [Formula: see text] eigenvalues are in the bulk, and their behavior, appropriately normalized, converges to the semi-circle
Burkhardt, Paula   +8 more
openaire   +2 more sources

Prediction of anomalous LA-TA splitting in electrides

open access: yesMatter and Radiation at Extremes, 2021
Electrides are an emerging class of materials with excess electrons localized in interstices and acting as anionic interstitial quasi-atoms (ISQs). The spatial ion–electron separation means that electrides can be treated physically as ionic crystals, and
Leilei Zhang, Hua Y. Geng, Q. Wu
doaj   +1 more source

SIMETRISASI BENTUK KANONIK JORDAN

open access: yesBarekeng, 2021
If the characteristic polynomial of a linear operator  is completely factored in scalar field of  then Jordan canonical form  of  can be converted to its rational canonical form  of , and vice versa.
Darlena Darlena, Ari Suparwanto
doaj   +1 more source

A new Approach for the Modulus-Based Matrix Splitting Algorithms

open access: yesIEEE Access, 2019
We investigate the modulus-based matrix splitting iteration algorithms for solving the linear complementarity problems (LCPs) and propose a new model to solve it.
Wenpeng Wang   +3 more
doaj   +1 more source

Matrix partitions of split graphs

open access: yesDiscrete Applied Mathematics, 2014
Matrix partition problems generalize a number of natural graph partition problems, and have been studied for several standard graph classes. We prove that each matrix partition problem has only finitely many minimal obstructions for split graphs. Previously such a result was only known for the class of cographs.
Feder, Tomás   +2 more
openaire   +2 more sources

A Data-Driven Parameter Prediction Method for HSS-Type Methods

open access: yesMathematics, 2022
Some matrix-splitting iterative methods for solving systems of linear equations contain parameters that need to be specified in advance, and the choice of these parameters directly affects the efficiency of the corresponding iterative methods. This paper
Kai Jiang, Jianghao Su, Juan Zhang
doaj   +1 more source

A new generalized shift-splitting method for nonsymmetric saddle point problems

open access: yesAdvances in Mechanical Engineering, 2022
Recently, Huang and Huang [ Journal of Computational and Applied Mathematics , 328 (2018) 381–399] proposed a modified generalized shift-splitting preconditioned (denoted by MGSSP) method for solving large sparse saddle point problems, and gave the ...
Tao Wei, Li-Tao Zhang
doaj   +1 more source

Excited Baryons in Lattice QCD [PDF]

open access: yes, 2002
We present first results for the masses of positive and negative parity excited baryons calculated in lattice QCD using an O(a^2)-improved gluon action and a fat-link irrelevant clover (FLIC) fermion action in which only the irrelevant operators are ...
A. G. Williams   +63 more
core   +4 more sources

Albertson (Alb) spectral radii and Albertson (Alb) energies of graph operation

open access: yesFrontiers in Chemistry, 2023
The sum of the absolute eigenvalues of the adjacency matrix make up graph energy. The greatest absolute eigenvalue of the adjacency matrix is represented by the spectral radius of the graph.
Muhammad Mobeen Munir, Urwah Tul Wusqa
doaj   +1 more source

Computing Exponential for Iterative Splitting Methods: Algorithms and Applications

open access: yesJournal of Applied Mathematics, 2011
Iterative splitting methods have a huge amount to compute matrix exponential. Here, the acceleration and recovering of higher-order schemes can be achieved.
Jürgen Geiser
doaj   +1 more source

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