Results 41 to 50 of about 1,625 (133)

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  

Positive Solutions of Fractional Differential Equations with p-Laplacian

Journal of Function Spaces, 2017
The multiplicity of positive solution for a new class of four-point boundary value problem of fractional differential equations with p-Laplacian operator is investigated. By the use of the Leggett-Williams fixed-point theorem, the multiplicity results of
Yuansheng Tian, Sujing Sun, Zhanbing Bai
doaj   +1 more source

Aquaculture and early life stages of the Hawaiian Potter's angelfish (Centropyge potteri)

Journal of the World Aquaculture Society, Volume 56, Issue 3, June 2025.
Abstract The Potter's angelfish (Centropyge potteri), a Hawaiian endemic reef fish, has long been prized in the global aquarium trade, with approximately 9000 individuals collected annually from the wild before Hawai‘i's 2021 ban on commercial aquarium fish collection.
Kent A. Glover, Chatham K. Callan
wiley   +1 more source

The influence of temperature, humidity and wind on the daily visits to water by the Australian zebra finch

Journal of Avian Biology, Volume 2025, Issue 3, May 2025.
The Australian zebra finch is an arid‐adapted passerine with high hygric demands, that is projected to be at risk from increasing temperature and aridity throughout its distribution by the end of the century. We examine here how individual zebra finches modify their visits to water in response to the climatic conditions of ambient temperature, relative
Hector A. Pacheco‐Fuentes, Christine E. Cooper, Riccardo Ton, Simon C. Griffith   +3 more
wiley   +1 more source

Multiple solutions for nonresonance impulsive functional differential equations

Electronic Journal of Differential Equations, 2003
In this paper we investigate the existence of multiple solutions for first and second order impulsive functional differential equations with boundary conditions. Our main tool is the Leggett and Williams fixed point theorem.
Mouffak Benchohra, Abdelghani Ouahab
doaj  

Investigating Learning in Educational Contexts: Methodological Challenges and Potential Solutions in the Field of Mind, Brain and Education

Mind, Brain, and Education, Volume 19, Issue 2, Page 101-114, May 2025.
Abstract Mind, brain and education (MBE) is a transdisciplinary field aiming at better understanding learning and at providing a grounding of education in research. Some challenges persist, such as increased time commitments, training needs, ethical, and logistical considerations.
Jessica Massonnié
wiley   +1 more source

Positive solutions for systems of third-order generalized Sturm-Liouville boundary-value problems with (p,q)-Laplacian

Electronic Journal of Differential Equations, 2011
In this work, we use the Leggett-Williams fixed point theorem to prove the existence of at least three positive solutions to a system of third-order ordinary differential equations with (p,q ...
Nemat Nyamoradi
doaj  

Existence Results for Fractional Differential Equations with Multistrip Riemann–Stieltjes Integral Boundary Conditions

Discrete Dynamics in Nature and Society, 2018
This paper is concerned with the existence and multiplicity of the positive solutions for a fractional boundary value problem with multistrip Riemann–Stieltjes integral boundary conditions.
Tongling Lv, Huihui Pang, Limei Cao
doaj   +1 more source

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 three positive solutions for a system of nonlinear third-order ordinary differential equations

Electronic Journal of Differential Equations, 2011
In this work, we use the Leggett-Williams fixed point theorem, we prove the existence of at least three positive solutions of a boundary-value problem for system of third-order ordinary differential equations.
Nemat Nyamoradi
doaj