Results 41 to 50 of about 1,609,595 (239)

Periodicity, Stability, and Boundedness of Solutions to Certain Second Order Delay Differential Equations

International Journal of Differential Equations, 2016
The behaviour of solutions to certain second order nonlinear delay differential equations with variable deviating arguments is discussed. The main procedure lies in the properties of a complete Lyapunov functional which is used to obtain suitable ...
A. T. Ademola, B. S. Ogundare, M. O. Ogundiran, O. A. Adesina   +3 more
doaj   +1 more source

Teaching Partial Differential Equations with CAS [PDF]

, 2018
Partial Differential Equations (PDE) are one of the topics where Engineering students find more difficulties when facing Math subjects. A basic course in Partial Differential Equations (PDE) in Engineering, usually deals at least, with the following ...
Aguilera-Venegas, Gabriel, Galán-García, José Luis, Galán-García, María Ángeles, Padilla-Domínguez, Yolanda, Rodriguez-Cielos, Pedro, Rodríguez-Cielos, Ricardo   +5 more
core  

Two problems in the theory of differential equations

, 2019
1) The differential equation considered in terms of exterior differential forms, as \'E.Cartan did, singles out a differential ideal in the supercommutative superalgebra of differential forms, hence an affine supervariety. In view of this observation, it
Leites, Dimitry
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Nonoscillatory functional-differential equations [PDF]

Pacific Journal of Mathematics, 1984
Our aim in this paper is to obtain sufficient conditions under which certain functional differential equations have a " large" number of nonoscillatory solutions. Using the characteristic equation of a "majorant" delay differential equation with constant coefficients and Schauder's fixed point theorem, we obtain conditions under which the functional ...
Ladas, G., Sficas, Y. G., Stavroulakis, I. P.   +2 more
openaire   +4 more sources

To the boundary value problem of ordinary differential equations

Electronic Journal of Qualitative Theory of Differential Equations, 2015
Method for solving of a boundary value problem for ordinary differential equations with boundary conditions at phase and integral constraints is proposed.
Serikbai Aisagaliev, Zhanat Zhunussova
doaj   +1 more source

Initial-Boundary Value Problems for Anisotropic Parabolic Equations with Variable Exponents of the Nonlinearity in Unbounded Domains with Conditions at Infinity

Journal of Optimization, Differential Equations and Their Applications, 2022
We deal with the initial-boundary value problems with some restrictions at infinity for linear and nonlinear anisotropic parabolic second-order equations in unbounded domains with respect to the spatial variables.
Mykola Bokalo
doaj   +1 more source

A reinterpretation of set differential equations as differential equations in a Banach space

, 2015
Set differential equations are usually formulated in terms of the Hukuhara differential, which implies heavy restrictions for the nature of a solution.
Rasmussen, Martin, Rieger, Janosch, Webster, Kevin   +2 more
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Exploring Evolutionary Fitness in Biological Systems Using Machine Learning Methods

Entropy, 2020
Here, we propose a computational approach to explore evolutionary fitness in complex biological systems based on empirical data using artificial neural networks. The essence of our approach is the following.
Oleg Kuzenkov, Andrew Morozov, Galina Kuzenkova   +2 more
doaj   +1 more source

Two-phase heat conduction problems with Sturm-type boundary conditions

Boundary Value Problems
In this work, the solution is justified using the method of separation of variables for initial-boundary value problems of the heat conduction equation with piecewise constant thermal conductivity coefficient under Sturm-type boundary conditions ...
Umbetkul Koilyshov, Makhmud Sadybekov
doaj   +1 more source

Renormalizing Partial Differential Equations

, 1994
In this review paper, we explain how to apply Renormalization Group ideas to the analysis of the long-time asymptotics of solutions of partial differential equations. We illustrate the method on several examples of nonlinear parabolic equations.
A. Bressan, A. Gmira, A. Soffer, B. Simon, B.J. Lemesurier, D.G. Aronson, D.H. Sattinger, G.I. Barenblatt, H. Brezis, H. Fujita, H.A. Levine, J-P. Eckmann, J. Bricmont, J. Bricmont, J. Bricmont, J. Bricmont, J. Bricmont, J. Bricmont, J. Bricmont, J. Glimm, J. Miller, J.L.L. Velazquez, J.P. Eckmann, J.W. Cahn, K. Kirchgässner, L-Y. Chen, L.A. Bunimovich, M. Berger, M. Bramson, M. Cross, M. Escobedo, M. Escobedo, M.A. Herrero, M.A. Herrero, M.A. Herrero, N. Goldenfeld, N. Goldenfeld, N. Goldenfeld, P. Collet, P. Collet, P. Collet, R. Pego, S. Filippas, S. Filippas, S. Kamin, S. Kamin, S. Kamin, T. Gallay, T. Gallay, V.A. Galaktionov, Y. Giga, Y. Giga, Y. Giga   +52 more
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