Results 41 to 50 of about 979,219 (176)

p‐Laplacian Fractional Differential Equations With Singular Terms and Infinite Point Boundary Conditions

open access: yesJournal of Applied Mathematics, Volume 2026, Issue 1, 2026.
Fractional differential equations (FDEs) are of great significance for describing complex physical processes with memory and genetic characteristics. The introduction of the p‐Laplacian operator can expand its applicability in nonlinear problems. To explore the uniqueness multiplicity, and variety of solutions to p‐Laplacian differential equations with
Haiyan Li, Yuhua Xu
wiley   +1 more source

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

open access: yesElectronic 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  

First Detection of [SI] in Near‐IR JWST Observations of Io in Eclipse, and Comparison With SO Emissions, Evolving Volcanic Eruptions, and Prior UV HST‐STIS [SI] Emissions

open access: yesJournal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract We observed Io with the James Webb Space Telescope (JWST) NIRSpec/Integral Field Unit (1.0–5.3 μm, R∼2700 $R\sim 2700$) in August 2023 while the satellite was in eclipse. Thermal emission from Kanehekili Fluctus is consistent with the cooling of lava flows after a vigorous eruption in November 2022.
Imke de Pater   +20 more
wiley   +1 more source

Multiple solutions for nonresonance impulsive functional differential equations

open access: yesElectronic 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  

Positive Solutions of Fractional Differential Equations with p-Laplacian

open access: yesJournal 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

Behavioural and physiological adaptations of a jumping spider to a marine environment

open access: yesJournal of Zoology, Volume 327, Issue 2, Page 148-158, October 2025.
We investigated aspects of Maratus marinus (Salticidae) behaviour and physiology that allow it to exploit the intertidal zone of its habitat and survive periods of submergence. In a simulated rising tide, spiders within densely constructed nests remained, continuing to respire while submerged. Spiders in flimsily built nests fled the oncoming tide, and
M. A. Leggett, J. Hill, X. J. Nelson
wiley   +1 more source

Morphological covariates of the ontogenetic shift from nauplii to copepodite prey in larval fish

open access: yesJournal of Fish Biology, Volume 107, Issue 1, Page 169-179, July 2025.
Abstract Larval fish are active planktonic predators, with many species feeding initially on copepod nauplii and gradually shifting their selection to copepodites. This study evaluated whether it is possible to develop a general widely applicable empirical model to describe the transition from feeding on copepod nauplii to copepodites in relation to ...
Pierre Pepin
wiley   +1 more source

Arthur George Williams Scrapbooks, circa 1905-1935

open access: yes, 1905
The scrapbooks of Arthur George Williams contain documents from the Modern Language Association of Virginia, newspaper clippings, primarily written by Arthur George Williams or about his public lectures, as well as family birth certificates, school ...

core  

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

open access: yesElectronic 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  

Positive solutions for Hadamard differential systems with fractional integral conditions on an unbounded domain

open access: yesOpen Mathematics, 2017
In this paper, we investigate the existence of positive solutions for Hadamard type fractional differential system with coupled nonlocal fractional integral boundary conditions on an infinite domain. Our analysis relies on Guo-Krasnoselskii’s and Leggett-
Jessada Tariboon   +3 more
doaj   +1 more source

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