Results 21 to 30 of about 2,188,246 (287)

Least-squares Hermitian problem of complex matrix equation ( A X B , C X D ) = ( E , F ) $(AXB,CXD)=(E,F)$

open access: yesJournal of Inequalities and Applications, 2016
In this paper, we present a direct method to solve the least-squares Hermitian problem of the complex matrix equation ( A X B , C X D ) = ( E , F ) $(AXB,CXD)=(E,F)$ with complex arbitrary coefficient matrices A, B, C, D and the right-hand side E, F ...
Peng Wang, Shifang Yuan, Xiangyun Xie
doaj   +1 more source

A Diagrammatic Equation for Oriented Planar Graphs [PDF]

open access: yes, 2010
In this paper we introduce a diagrammatic equation for the planar sector of square non hermitian random matrix models strongly reminiscent of Polchinski's equation in quantum field theory.
Ambjorn   +27 more
core   +1 more source

On the Yang-Baxter-like matrix equation for rank-two matrices

open access: yesOpen Mathematics, 2017
Let A = PQT, where P and Q are two n × 2 complex matrices of full column rank such that QTP is singular. We solve the quadratic matrix equation AXA = XAX.
Zhou Duanmei, Chen Guoliang, Ding Jiu
doaj   +1 more source

Determination of stoichiometric coefficients by the matrix method [PDF]

open access: yesHemijska Industrija, 2007
The problem of calculating stoichiometric coefficients in a chemical equation can be solved by standard methods and the method of multidimensional vector space, but good knowledge of vector algebra is required.
Tadić Goran S.   +3 more
doaj   +1 more source

Bidifferential Calculus Approach to AKNS Hierarchies and Their Solutions [PDF]

open access: yes, 2010
We express AKNS hierarchies, admitting reductions to matrix NLS and matrix mKdV hierarchies, in terms of a bidifferential graded algebra. Application of a universal result in this framework quickly generates an infinite family of exact solutions ...
Dimakis, Aristophanes   +1 more
core   +4 more sources

Finite difference method application in design of foundation girder of variable cross-section loaded on ends [PDF]

open access: yesFacta Universitatis. Series: Architecture and Civil Engineering, 2008
Deflection of foundation girder supported by the deformable base has been defined by the system of differential equations, where the differential equation of the elastic line of the girder is of the fourth order.
Prolović Verka, Bonić Zoran
doaj   +1 more source

On A Matrix Hypergeometric Differential Equation

open access: yesمجلة العلوم البحتة والتطبيقية, 2021
In this paper we consider a matrix Hypergeometric differential equation, which are special matrix functions and solution of a specific second order linear differential equation.
Salah Hamd   +2 more
doaj   +1 more source

Some non-commuting solutions of the Yang-Baxter-like matrix equation

open access: yesOpen Mathematics, 2020
Let A be a square matrix satisfying A4=A{A}^{4}=A. We solve the Yang-Baxter-like matrix equation AXA=XAXAXA=XAX to find some solutions, based on analysis of the characteristic polynomial of A and its eigenvalues. We divide the problem into small cases so
Zhou Duan-Mei, Vu Hong-Quang
doaj   +1 more source

Lax matrix solution of c=1 Conformal Field Theory [PDF]

open access: yes, 2014
To a correlation function in a two-dimensional conformal field theory with the central charge $c=1$, we associate a matrix differential equation $\Psi' = L \Psi$, where the Lax matrix $L$ is a matrix square root of the energy-momentum tensor.
Eynard, Bertrand, Ribault, Sylvain
core   +5 more sources

Matrix iteration algorithms for solving the generalized Lyapunov matrix equation

open access: yesAdvances in Difference Equations, 2021
In this paper, we first recall some well-known results on the solvability of the generalized Lyapunov equation and rewrite this equation into the generalized Stein equation by using Cayley transformation.
Juan Zhang, Huihui Kang, Shifeng Li
doaj   +1 more source

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