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О конструктивном исследовании краевых задач с приближенным выполнением краевых условий
Известия высших учебных заведений. Математика. 2010. № 10. С. 82-86.
Maksimov V. P., Chadov A. L.
Translator: Pinyagina O.
We consider linear boundary-value problems for systems of functional differential equations when the number of boundary conditions is greater than the dimension of the system. We allow the boundary conditions to be fulfilled approximately. We propose an approach based on theorems whose conditions allow the verification by special reliable computing procedures.
Research target:
Mathematics
Language:
Russian
Maksimov V. P., Chadov A. L., Вестник Пермского университета. Серия: Экономика 2012 № 3 С. 12-17
Linear boundary value problems for functional differential systems are considered when the number of boundary conditions is greater than the dimension of the system in the case of approximate fulfilment of boundary conditions. Boundary value problems are connected with studying the problems on the attainability for given indexes of development to the economic system under ...
Added: November 13, 2012
Chadov A. L., Maksimov V. P., Functional Differential Equations 2012 Vol. 19 No. 1-2 P. 49-62
For a functional differential system with continuous and discrete times, the general linear boundary value problem and the problem of control with respect to an on-target vector-functional are considered. Conditions for the solvability of the problems are obtained. Questions of computer-aided techniques for studying these problems are discussed. ...
Added: November 13, 2012
Maksimov V. P., Chadov A. L., Известия высших учебных заведений. Математика 2012 № 9 С. 72-76
We consider control problems for linear systems of functional-differential equations with both continuous and discrete time variables. The goal of controlling the systemunder consideration is prescribed by a finite set of linear functionals. The number of these functionals is independent of the dimension of the system. We describe the subset of controls generated by a ...
Added: November 13, 2012
Maksimov V. P., Chadov A. L., Вестник Пермского университета. Серия: Экономика 2011 № 2 С. 13-23
Динамические модели, рассматриваемые в этой работе, с одной стороны, представляют собой конкретную реализацию абстрактных функционально-дифференциальных уравнений. С другой стороны, они охватывают широкий класс моделей, возникающих при исследовании реальных экономических и эколого-экономических процессов с учетом эффектов последействия (запаздывания) и импульсных возмущений (шоков), приводящих к скачкообразному изменению основных показателей функционирования изучаемой системы. Рассматриваемые модели содержат одновременно как ...
Added: November 14, 2012
Beklaryan L. A., Beklaryan A., Computational Mathematics and Mathematical Physics 2020 Vol. 60 No. 8 P. 1249-1260
The importance of functional differential equations of pointwise type is determined by the fact that their solutions are used to construct traveling-wave solutions for induced infinite-dimensional ordinary differential equations, and vice versa. Solutions of such equations exhibit bifurcation. A theorem on branching bifurcation is obtained for the solution to a linear homogeneous functional differential equation of pointwise type. ...
Added: September 21, 2020
Chadov A. L., Maksimov V. P., Вестник Тамбовского университета. Серия: Естественные и технические науки 2011 Vol. 16 No. 4 P. 1211-1213
For a functional differential system with continuous and discrete times, the problem of control with respect to an on-target vector-functional is considered. Conditions for the solvability of the problem are obtained. ...
Added: November 14, 2012
Maksimov V. P., Поносов Д. А., Chadov A. L., Вестник Пермского университета. Серия: Экономика 2010 № 2 С. 45-50
Рассматриваются некоторые задачи экономико-математического моделирования, - задачи управления и задачи корректной разрешимости для динамических моделей в виде систем с запаздыванием, как для непрерывного, так и для дискретного времени. Для систем с непрерывным временем обсуждается влияние последействия в канале управления на общие затраты по целевому управлению системой. Для систем с дискретным временем рассматривается возможность коррекции противоречивых ...
Added: November 14, 2012
Beklaryan L. A., Beklaryan A., Journal of machine learning and data analysis 2018 Vol. 4 No. 4 P. 220-234
The problem of existence of soliton solutions (solutions of the traveling wave type) for the Korteweg-de Vries equation with a polynomial potential is considered on the basis of the approach within which the presence of a one-to-one correspondence of such solutions with solutions of the induced functional differential equation of pointwise type is demonstrated. On ...
Added: January 11, 2019
Beklaryan A., Advances in Systems Science and Applications 2020 Vol. 20 No. 2 P. 56-70
The article discusses construction of traveling wave type solutions for the Frenkel-Kontorova model on the propagation of longitudinal waves. For the first time, based on the existence and uniqueness theorem of traveling wave type solutions, as well as the approximation theorem, a complete family of traveling wave type solutions is constructed in the form of ...
Added: June 30, 2020
Бекларян Л. А., Дифференциальные уравнения 2018 Т. 54 № 10 С. 1299-1312
The work is devoted to periodic solutions of the functional differential equation of point type. In terms of the right-hand side of the original nonlinear functional-differential equation of point type, easily verifiable conditions of existence and uniqueness are formulated, iterative process of constructing such solution is described. In contrast to the scalar linearization, a more complex matrix ...
Added: February 12, 2019
Бекларян Л. А., Beklaryan A., Belousov F., Вестник Тамбовского университета. Серия: Естественные и технические науки 2015 Т. 20 № 6 С. 1736-1747
We investigate a problem of the existence of traveling-wave-type solutions for the finite-difference analogue of a nonlinear wave equation. In case of an inhomogeneous medium for vanishing traveling-wave-type solutions a natural extension in the form of quasi-traveling-wave-type solutions is given. ...
Added: December 7, 2015
Chadov A. L., Семенов А. В., Вестник Нижегородского университета им. Н.И. Лобачевского 2013 № 1-3 С. 77-83
The dynamic models considered in this work, contain at the same time as the equations describing dynamics of indicators in continuous time on a final interval, and the equations with discrete time, characteristic for econometric models. For the specified class of systems statements of tasks as tasks about approachibility of preset values of indi-cators, in ...
Added: March 24, 2014
Галкин Е. Г., Nikitin A. A., Вестник Московского университета. Серия 15: Вычислительная математика и кибернетика 2020 № 2 С. 11-18
The article presents the main approaches to the study of the stochastic process of population dynamics with continuous time and space and with fixed individuals, a countable system of integro-differential equations corresponding to the dynamics of spatial moments of this process is derived, and a method for finding an approximate solution using the method of ...
Added: February 18, 2020
Условия разрешимости начальной задачи для систем нелинейных функционально-дифференциальных уравнений
Ларионов А. С., Симонов П. М., Sheina M. V., Вестник Тамбовского университета. Серия: Естественные и технические науки 2010 Т. 15 № 2 С. 542-549
Theorems of existence and uniqueness of Cauchy’s problem solution for systems of nonlinear functional and differential equations are proved. During the proof of the theorems the positivity of the Cauchy’s matrix corresponding linear system is used essentially. ...
Added: October 22, 2012
Chadov A. L., Вестник Пермского научного центра 2013 № 3 С. 13-25
The main results obtained during the project № 10-01-96054 “Mathematical and computer
modeling of ecological and economic state for a region: problems of identification, forecasting,
attainability and control” are described in this paper in a popular form. The aim of the project was to
develop mathematical and software bases for construction of mathematical models complex of
ecological and economic ...
Added: October 25, 2013
Revenko A., Kuznetsov S., Fundamenta Informaticae 2012 Vol. 4 No. 115 P. 377-394
An approach for studying relations between properties of functions on sets is proposed. The approach is based on Attribute Exploration. 16 properties of functions are considered, among them monotonicity, idempotency, path independence, exchange properties, convexity, etc. Example functions are partially computer generated on the powersets of sets with 2, 3 and 4 elements. Attribute Exploration ...
Added: December 31, 2012
Belomestny D., Iosipoi L., Mathematics and Computers in Simulation 2021 No. 181 P. 351-363
Markov Chain Monte Carlo methods become increasingly popular in applied mathematics as a tool for numerical integration with respect to complex and high-dimensional distributions. However, application of MCMC methods to heavy-tailed distributions and distributions with analytically intractable densities turns out to be rather problematic. In this paper, we propose a novel approach towards the use ...
Added: October 31, 2020
Popkov Y., Popkov A., Dubnov Y. A., Автоматика и телемеханика 2020 № 7 С. 148-172
A randomized forecasting method based on the generation of ensembles of entropy-optimal forecasting trajectories is developed. The latter are generated by randomized dynamic regression models containing random parameters, measurement noises, and a random input. The probability density functions of random parameters and measurement noises are estimated using real data within the randomized machine learning procedure. ...
Added: October 31, 2020
Malyshev D., Вестник Нижегородского университета им. Н.И. Лобачевского 2008 № 6 С. 141-146
Рассматривается понятие граничного класса, которое является полезным инструментом для анализа вычислительной сложности задач на графах. Исследуются два конкретных класса графов, и приводятся задачи, для которых эти классы являются граничными. ...
Added: August 31, 2012
Beklemishev L. D., Оноприенко А. А., Математический сборник 2015 Т. 206 № 9 С. 3-20
We formulate some term rewriting systems in which the number of computation steps is finite for each output, but this number cannot be bounded by a provably total computable function in Peano arithmetic PA. Thus, the termination of such systems is unprovable in PA. These systems are derived from an independent combinatorial result known as the Worm ...
Added: March 13, 2016
D. V. Gribanov, D.S. Malyshev, P. M. Pardalos et al., Journal of Combinatorial Optimization 2018 Vol. 35 No. 4 P. 1128-1146
In this paper, we present fixed-parameter tractable algorithms for special cases of the shortest lattice vector, integer linear programming, and simplex width computation problems, when matrices included in the problems’ formulations are near square. The parameter is the maximum absolute value of the rank minors in the corresponding matrices. Additionally, we present fixed-parameter tractable algorithms ...
Added: February 19, 2018
Kryuchkov M., Rusakov S. V., Вестник Ижевского государственного технического университета 2015 № 2(66) С. 110-112
This paper describes the results of testing the neuronal technical trend indicator according to the exchange rate of Brent oil in 2014. Testing of the model was carried out on three time series, which characterized by their features. ...
Added: August 31, 2015
Vyalyi M., Дискретная математика 1991 Т. 3 № 3 С. 35-45
Added: October 17, 2014
Babash A. V., М. : ИНФРА-М, РИОР, 2013
Пособие предназначено для студентов высших учебных заведений, обучающихся по специальности «Прикладная информатика (в экономике)». Оно также содержит методический материал для ряда инновационных курсов лекций по профилю «Информационная безопасность» и может быть использовано и для блока дисциплин этого профиля. Ряд представленных результатов полезен специалистам и аспирантам, специализирующихся в указанной области. ...
Added: January 14, 2014