Results 11 to 20 of about 7,458,492 (235)

Linear systems and determinantal random point fields. [PDF]

open access: yes, 2009
Tracy and Widom showed that fundamentally important kernels in random matrix theory arise from systems of differential equations with rational coefficient.
Blower, Gordon
core   +5 more sources

Euler–Lagrange-Type Equations for Functionals Involving Fractional Operators and Antiderivatives

open access: yesMathematics, 2023
The goal of this paper is to present the necessary and sufficient conditions that every extremizer of a given class of functionals, defined on the set C1[a,b], must satisfy.
Ricardo Almeida
doaj   +1 more source

Efficacy of a complex plant-based preparation for poultry mycotoxicosis

open access: yesВетеринария сегодня, 2021
The article presents results of efficacy studies for a complex plant-based preparation for poultry mycotoxicosis. Feed additive fibralin contains polysaccharides (dried sugar beet pulp) and phospholipids (rapeseed lecithin) in the proportion 4:1 ...
E. V. Kuzminova   +3 more
doaj   +1 more source

Construction of controllability function as time of motion

open access: yesVisnik Harkivsʹkogo Nacionalʹnogo Universitetu im. V.N. Karazina. Cepiâ Matematika, Prikladna Matematika i Mehanika, 2023
This article is devoted to the controllability function method in admissible synthesis problems for linear canonical systems. The work considers methods of constructing such control so that the controllability function is time of motion of an arbitrary ...
V. I. Korobov, T. V. Andriienko
doaj   +1 more source

An m-Polar Fuzzy PROMETHEE Approach for AHP-Assisted Group Decision-Making

open access: yesMathematical and Computational Applications, 2020
The Analytical Hierarchy Process (AHP) is arguably the most popular and factual approach for computing the weights of attributes in the multi-attribute decision-making environment. The Preference Ranking Organization Method for Enrichment of Evaluations (
Muhammad Akram   +2 more
doaj   +1 more source

Investigation of gobal stability of the equilibrium position of a system of differential autonomous equations with the help of admissible functions [PDF]

open access: yesAIP Conference Proceedings, 2019
To study the global stability of the zero solution, which is a single rest point for a nonlinear system of autonomous differential equations, admissible functions are used. These functions are analogous to Lyapunov functions, but do not coincide with them. Admissible functions can also be used for study the global stability of the zero solution of such
openaire   +2 more sources

Positive decomposition of transfer functions with multiple poles [PDF]

open access: yes, 2006
We present new results on decomposing the transfer function t(z) of a linear, asymptotically stable, discrete-time SISO system as a difference t(z) = t(1)(z) - t(2)(z) of two positive linear systems.
Nagyné, Szilvási Márta   +2 more
core   +1 more source

Minimal positive realizations of transfer functions with nonnegative multiple poles [PDF]

open access: yes, 2005
This note concerns a particular case of the minimality problem in positive system theory. A standard result in linear system theory states that any nth-order rational transfer function of a discrete time-invariant linear single-input-single-output (SISO)
Matolcsi, Máté, Nagy, B.
core   +1 more source

Algorithm for positive realization of transfer functions [PDF]

open access: yes, 2003
The aim of this brief is to present a finite-step algorithm for the positive realization of a rational transfer function H(z). In comparision with previously described algorithms we emphasize that we do not make an a priori assumption on (but, instead,
Matolcsi, Máté, Nagy, Béla
core   +1 more source

On the minimization of some nonconvex double obstacle problems

open access: yesJournal of Applied Mathematics, 2003
We consider a nonconvex variational problem for which the set of admissible functions consists of all Lipschitz functions located between two fixed obstacles.
A. Elfanni
doaj   +1 more source

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