Results 31 to 40 of about 172,193 (304)

Constrained graph partitioning via matrix differential equations [PDF]

open access: yes, 2019
A novel algorithmic approach is presented for the problem of partitioning a connected undirected weighted graph under constraints such as cardinality or membership requirements or must-link and cannot-link constraints. Such constrained problems can be NP-
Guglielmi, N.   +11 more
core   +3 more sources

The solution of the full matrix analogue of the generalized abel equation with constant coefficients

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011
The system of generalized integral Abel equations in the matrix form with constant coefficients on the segment. Was considered at the terms of the integral Riemann-Liouville operators of matrix order.
Rina R Ismagilova
doaj   +3 more sources

The coordinate system transformation of a serial kinematic structures and use in the derivation of systems motion equations

open access: yesMATEC Web of Conferences, 2016
This text discusses the use of transformation matrices to determine the motion equations of the complex mechanical structure. Use of the transformation matrix does not apply only to motion equations but has the general use in relative positions determine
Zátopek Jiří
doaj   +1 more source

On application of Cramer’s rule

open access: yesLietuvos Matematikos Rinkinys, 2011
The article analyses a possibility of modification of Cramer’s rule. The modified formulas for the solution of a system of linear equations, with application of which the volume of calculation reduces, are suggested.
Antanas Apynis
doaj   +1 more source

An Iterative Algorithm for the Reflexive Solution of the General Coupled Matrix Equations

open access: yesThe Scientific World Journal, 2013
The general coupled matrix equations (including the generalized coupled Sylvester matrix equations as special cases) have numerous applications in control and system theory.
Zhongli Zhou, Guangxin Huang
doaj   +1 more source

On tau functions for orthogonal polynomials and matrix models. [PDF]

open access: yes, 2010
Let v be a real polynomial of even degree, and let \rho be the equilibrium probability measure for v with support S; to that v(x) greeater than or equal to \int 2log |x-y| \rho (dy) +C for some constant C with equality on S.
Gordon Blower, Blower, Gordon
core   +1 more source

ON ONE NONLINEAR INTEGRABLE MODEL OF WAVE INTERACTION

open access: yesИзвестия высших учебных заведений. Поволжский регион: Физико-математические науки, 2020
Background. In this work, the functional method is applied to a first-order matrix system and the corresponding equations of wave dynamics are derived.
V. M. Zhuravlev
doaj   +1 more source

Non-stochastic matrix Schrödinger equation for open systems [PDF]

open access: yesThe Journal of Chemical Physics, 2014
We propose an extension of the Schrödinger equation for a quantum system interacting with environment. This extension describes dynamics of a collection of auxiliary wavefunctions organized as a matrix m, from which the system density matrix can be reconstructed as \documentclass[12pt]{minimal}\begin{document}$\hat{\rho }= {\bm m} {\bm m}^\dagger$\end ...
Loïc Joubert-Doriol   +2 more
openaire   +3 more sources

Darboux transformation with dihedral reduction group [PDF]

open access: yes, 2014
We construct the Darboux transformation with Dihedral reduction group for the 2-dimensional generalisation of the periodic Volterra lattice. The resulting Bäcklund transformation can be viewed as a nonevolutionary integrable differential difference ...
Papamikos, Georgios   +6 more
core   +1 more source

Algorithm for Calculating Statically Indeterminate Trusses Using the Force Method

open access: yesStructural Mechanics of Engineering Constructions and Buildings
The study focuses on developing an algorithm for calculating statically indeterminate trusses using the force method. The main challenge in algorithmizing the force method lies in obtaining the solution to the homogeneous equilibrium equations, which is ...
Vladimir V. Lalin, Timur R. Ibragimov
doaj   +1 more source

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