Results 21 to 30 of about 1,790,928 (250)
Takens-Bogdanov bifurcation of travelling wave solutions in pipe flow [PDF]
, 2010 The appearance of travelling-wave-type solutions in pipe Poiseuille flow that are disconnected from the basic parabolic profile is numerically studied in detail.
B. ECKHARDT +6 more
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The method of upper, lower solutions and monotone iterative scheme for higher order hyperbolic partial differential equations [PDF]
Journal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics, 1989 AbstractUniformly monotone convergent iterative methods for obtaining multiple solutions of (n + m)th order hyperbolic partial differential equations together with initial conditions are discussed. Appropriate partial differential inequalities which connect upper and lower solutions, and variation of parameters formula is developed.
openaire +1 more source
A note on strong solutions of stochastic differential equations with a discontinuous drift coefficient [PDF]
, 2006 The existence of a mean-square continuous strong solution is established for vector-valued Itö stochastic differential equations with a discontinuous drift coefficient, which is an increasing function, and with a Lipschitz continuous diffusion ...
Halidias, Nikolaos, Kloeden, Peter E.
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Well-Ordered and Non-Well-Ordered Lower and Upper Solutions for Periodic Planar Systems
Advanced Nonlinear Studies, 2021 The aim of this paper is to extend the theory of lower and upper solutions to the periodic problem associated with planar systems of differential equations.
Fonda Alessandro +2 more
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, 2011 We prove some new results on existence of solutions to first--order ordinary differential equations with deviating arguments. Delay differential equations are included in our general framework, which even allows deviations to depend on the unknown ...
Figueroa, Rubén, Pouso, Rodrigo López
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Solving ill-posed bilevel programs [PDF]
, 2016 This paper deals with ill-posed bilevel programs, i.e., problems admitting multiple lower-level solutions for some upper-level parameters. Many publications have been devoted to the standard optimistic case of this problem, where the difficulty is ...
AG Mersha +43 more
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On the nonlocal Fisher-KPP equation: steady states, spreading speed and global bounds
, 2013 We consider the Fisher-KPP equation with a non-local interaction term. We establish a condition on the interaction that allows for existence of non-constant periodic solutions, and prove uniform upper bounds for the solutions of the Cauchy problem, as ...
Hamel, Francois, Ryzhik, Lenya
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Lower and Upper Solutions for Even Order Boundary Value Problems
Mathematics, 2019 In this paper, we prove the existence of solutions of nonlinear boundary value problems of arbitrary even order using the lower and upper solutions method.
Alberto Cabada, Lucía López-Somoza
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Lower and Upper Solutions Method for Positive Solutions of Fractional Boundary Value Problems
Abstract and Applied Analysis, 2013 We apply the lower and upper solutions method and fixed-point theorems to prove the existence of positive solution to fractional boundary value problem D0+αut+ft,ut=0 ...
R. Darzi +3 more
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Fractal and Fractional, 2022 The aim of this research work is to derive some appropriate results for extremal solutions to a class of generalized Caputo-type nonlinear fractional differential equations (FDEs) under nonlinear boundary conditions (NBCs).
Choukri Derbazi +5 more
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