Results 91 to 100 of about 767 (126)

Positive solutions for second order impulsive differential equations with Stieltjes integral boundary conditions

open access: yesAdvances in Differential Equations, 2012
In this paper, we study the existence of positive solutions for a singular second order impulsive differential equations with Stieltjes integral boundary conditions.
Jiqiang Jiang, Lishan Liu, Yonghong Wu
semanticscholar   +1 more source

Global Components of Positive Bounded Variation Solutions of a One-Dimensional Indefinite Quasilinear Neumann Problem

open access: yesAdvanced Nonlinear Studies, 2019
This paper investigates the topological structure of the set of the positive solutions of the one-dimensional quasilinear indefinite Neumann ...
López-Gómez Julian, Omari Pierpaolo
doaj   +1 more source

Monotone iterative technique for nonlinear fourth order integro-differential equations [PDF]

open access: yesarXiv, 2020
In this paper, we consider the solvability of a class of nonlinear fourth order integro-differential equations with Navier boundary condition. We first deal with a corresponding linear problem and establish a maximum principle. Using the maximum principle, we develop a monotone iterative technique in the presence of lower and upper solutions to solve ...
arxiv  

Positive solutions for nonlocal extended Fisher-Kolmogorov and Swift-Hohenberg equations via bifurcation methods [PDF]

open access: yesarXiv, 2020
In this paper we study the existence of positive solutions for a class of nonlocal fourth-order nonautonomous differential equations which can be seen as generalization of extended Fisher-Kolmogorov and Swift-Hohenberg equations. The main result is proved using bifurcation theory.
arxiv  

Multi-strip fractional q-integral boundary value problems for nonlinear fractional q-difference equations

open access: yes, 2014
In this article, we study the existence and uniqueness of solutions for multi-strip fractional q-integral boundary value problems of nonlinear fractional q-difference equations.
Nittaya Pongarm   +3 more
semanticscholar   +1 more source

Existence of positive periodic solutions for third-order differential equation with strong singularity

open access: yesAdvances in Differential Equations, 2014
Sufficient conditions are presented for the existence of positive periodic solutions for a third-order nonlinear differential equation with singularity. Besides, an example is given to illustrate the results. MSC:34K13, 34B16, 34B18.
Zhibo Cheng
semanticscholar   +1 more source

New Estimations for Sturm-Liouville Problems in Difference Equations [PDF]

open access: yesarXiv, 2015
In this paper, Sturm-Liouville problem for difference equations is considered with potential function q(n). The representations of solutions are obtained by variation of parameters method. These solutions are proved, using summation by parts. Also, estimation of asymptotic expansion of the solutions are established.
arxiv  

Cribriform-type adenocarcinoma of the colorectum: comprehensive molecular analyses of a distinctive histologic subtype of colorectal cancer. [PDF]

open access: yesCarcinogenesis, 2022
Yamada S   +9 more
europepmc   +1 more source

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