Results 51 to 60 of about 1,012,253 (172)

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  

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

Journal 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, Darrell F. Strobel, Ashley Gerard Davies, Joachim Saur, Lorenz Roth, Katherine de Kleer, Emmanuel Lellouch, Zachariah Milby, Carl Schmidt, Thierry Fouchet, Michael H. Wong, Leigh N. Fletcher, Jake Harkett, Michael Roman, Richard J. Cartwright, Jason E. Perry, Julie Renaud‐Kim, Carolyn Jordan, Stephan Schlegel, David A. Williams, David M. Nelson   +20 more
wiley   +1 more source

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

Existence of three solutions to integral and discrete equations via the leggett williams fixed point theorem

, 2018
Criteria are developed for the existence of three nonnegative solutions to integral and discrete equations.
O\u27Regan, Donal, Agarwal, Ravi P.
core  

Charles D. Leggett

, 1924
An obituary for the Iowan district judge Charles D ...

core   +2 more sources

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

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

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

Journal 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

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