Results 51 to 60 of about 147 (97)

Positive Solutions for Singular p-Laplacian Fractional Differential System with Integral Boundary Conditions

Abstract and Applied Analysis, 2014
This paper investigates the existence of positive solutions for a class of singular p-Laplacian fractional differential equations with integral boundary conditions.
Liping Wang, Zongfu Zhou, Hui Zhou
doaj   +1 more source

Three symmetric positive solutions of fourth-order singular nonlocal boundary value problems

Electronic Journal of Qualitative Theory of Differential Equations, 2011
In this paper, we study the existence of three positive solutions of fourth-order singular nonlocal boundary value problems. We show that there exist triple symmetric positive solutions by using Leggett-Williams fixed-point theorem.
Fuyi Xu
doaj   +1 more source

Symmetric positive solutions for $\phi$-Laplacian boundary-value problems with integral boundary conditions

Electronic Journal of Differential Equations, 2013
In this article, we study the existence, multiplicity, and nonexistence of symmetric positive solutions for a class of four-order integral boundary value problems with $\phi$-Laplacian operator.
Wengui Yang
doaj  

Existence of three positive periodic solutions for differential systems with feedback controls on time scales

Electronic Journal of Differential Equations, 2010
Using the Leggett-Williams multiple fixed point theorem, we establish criteria for the existence of three positive periodic solutions of a class of differential systems with feedback controls on time scales.
Yongkun Li, Tianwei Zhang, Jianfeng Suo
doaj  

Existence of a positive solution to a right focal boundary value problem

Electronic Journal of Qualitative Theory of Differential Equations, 2010
In this paper we apply the recent extension of the Leggett-Williams Fixed Point Theorem which requires neither of the functional boundaries to be invariant to the second order right focal boundary value problem.
Richard Avery, Johnny Henderson, Douglas Anderson   +2 more
doaj   +1 more source

Correction to “An Analysis on the Positive Solutions for a Fractional Configuration of the Caputo Multiterm Semilinear Differential Equation”

Journal of Function Spaces, Volume 2025, Issue 1, 2025.
wiley   +1 more source

Multiple positive solutions for the system of higher order two-point boundary value problems on time scales

Electronic Journal of Qualitative Theory of Differential Equations, 2009
In this paper, we establish the existence of at least three positive solutions for the system of higher order boundary value problems on time scales by using the well-known Leggett-Williams fixed point theorem.
K. Prasad, P. Murali, N. V. V. S. Suryanarayana   +2 more
doaj   +1 more source

Some Fixed Point Theorems of Leggett–Williams Type for Multivalued Mappings and Applications to Second-Order Differential Inclusions

Electronic Journal of Applied Mathematics
This paper examines the application of fixed point index theory to set-valued mappings in ordered Banach spaces, with a specific focus on Leggett-Williams type fixed point theorems. The study provides novel conditions for the existence of one and multiple fixed points under a range of assumptions.
openaire   +1 more source

Multiple periodic solutions for impulsive functional differential equations with feedback control

Electronic Journal of Differential Equations, 2011
Using the well known Leggett-Williams fixed point theorem, we study the existence of periodic solutions for a class of impulsive functional equations with feedback control. The main results are illustrated with two examples.
Peilian Guo, Yansheng Liu
doaj  

Multiple positive solutions for a coupled system of fractional multi-point BVP with p-Laplacian operator

Advances in Difference Equations, 2017
We investigate the existence of positive solutions for a system of fractional multi-point BVP with p-Laplacian operator. Our main tool is the fixed point theorem due to Leggett-Williams.
Yang Liu, Dapeng Xie, Chuanzhi Bai, Dandan Yang   +3 more
doaj   +1 more source