Results 61 to 70 of about 168,051 (190)

Oscillations for an equation arising in groundwater flow with the relaxation time

Mathematical Modelling and Analysis, 2011
Groundwater flow problems are mostly formulated by means of massbalance equation combined with Darcy's law. In this way, the flow is governed by a parabolic equation.
Jiri Mls, Leopold Herrmann
doaj   +1 more source

Analytic solution of an oscillatory migratory alpha^2 stellar dynamo

, 2017
Analytic solutions of the mean-field induction equation predict a nonoscillatory dynamo for homogeneous helical turbulence or constant alpha effect in unbounded or periodic domains. Oscillatory dynamos are generally thought impossible for constant alpha.
Brandenburg, Axel
core   +1 more source

Monotocity properties of oscillatory solutions of two-dimensional systems of differential equations

Electronic Journal of Differential Equations, 2015
Sufficient conditions for the monotonicity of the sequences of the absolute values of all local extrema of components of a two-dimensional systems are obtained.
Miroslav Bartusek
doaj  

Oscillatory properties of solutions of the fourth order difference equations with quasidifferences [PDF]

Opuscula Mathematica, 2014
A class of fourth-order neutral type difference equations with quasidifferences and deviating arguments is considered. Our approach is based on studying the considered equation as a system of a four-dimensional difference system.
Robert Jankowski, Ewa Schmeidel, Joanna Zonenberg   +2 more
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Full quantum solutions to the resonant four-wave mixing of two single-photon wave packets

, 2003
We analyze both analytically and numerically the resonant four-wave mixing of two co-propagating single-photon wave packets. We present analytic expressions for the two-photon wave function and show that soliton-type quantum solutions exist which display
A. Imamoğlu, A.K. Popov, A.O. Melikyan, A.R. Karapetyan, A.S. Zibrov, A.S. Zibrov, B. Kryzhanovsky, B. Lu, B.S. Ham, E. Arimondo, E.A. Korsunsky, G.S. Agarwal, H. Schmidt, J.P. Marangos, K.M. Gheri, K.M. Gheri, M. Fleischhauer, M. Fleischhauer, M. Jain, M. Jain, M.D. Lukin, M.D. Lukin, M.D. Lukin, M.D. Lukin, M.D. Lukin, M.D. Lukin, M.T. Johnsson, M.T. Johnsson, Mattias Johnsson, Michael Fleischhauer, P.L. Knight, P.R. Hemmer, S. Babin, S.A. Babin, S.E. Harris, S.E. Harris, S.E. Harris, U. Hinze   +37 more
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Oscillatory settling in wormlike-micelle solutions: bursts and a long time scale

, 2012
We study the dynamics of a spherical steel ball falling freely through a solution of entangled wormlike-micelles. If the sphere diameter is larger than a threshold value, the settling velocity shows repeated short oscillatory bursts separated by long ...
A. K. Sood, Aditya Sood, Aradian, Bandyopadhyay, Bisgaard, Cates, Cates, Das, Fielding, Forster, Ganapathy, Ganapathy, Ganapathy, Giomi, Giomi, Harlen, Hindmarsh, Jayaraman, Johnson, King, Mollinger, Nitin Kumar, Rama Govindarajan, Rehage, Rehage, Rienäcker, Rienäcker, Sayantan Majumdar, Sriram Ramaswamy, Stark, Stokes, Walker   +31 more
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Dynamics for Nonlinear Difference Equation

Advances in Difference Equations, 2009
We mainly study the global behavior of the nonlinear difference equation in the title, that is, the global asymptotical stability of zero equilibrium, the existence of unbounded solutions, the existence of period two solutions, the existence of ...
Wang Yanqin, Chen Dongmei, Li Xianyi
doaj  

EXISTENCE OF OSCILLATORY SOLUTIONS OF FRACTIONAL DIFFERENTIAL EQUATIONS

Journal of Applied Analysis & Computation
Summary: In this paper, we use Schauder-Tychonoff theorem to obtain a new sufficient condition for the global existence of oscillatory solutions for forced fractional delay differential equations.
Zhao, Huanhuan, Liu, Youjun, Kang, Shugui   +2 more
openaire   +2 more sources

On the oscillatory properties of the solutions of a class of integro-differential equations of neutral type

International Journal of Mathematics and Mathematical Sciences, 1992
In the present paper the oscillatory properties of the solutions of the equation[(Lx)(t)](n)+∫ItK(t,s,x(s))ds=0are investigated where n≥1, L is an operator of the difference type, It⊂ℝ, K:DK→ℝ, DK⫅ℝ3, x:[αx,∞]→ℝ. Under natural conditions imposed on L, It
D. D. Bainov, A. D. Myshkis, A. I. Zahariev   +2 more
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Oscillatory solutions of the Cauchy problem for linear differential equations

Electronic Journal of Differential Equations, 2015
We consider the Cauchy problem for second and third order linear differential equations with constant complex coefficients. We describe necessary and sufficient conditions on the data for the existence of oscillatory solutions. It is known that in the
Gro Hovhannisyan, Oliver Ruff
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