Results 11 to 20 of about 1,012,253 (172)
Three symmetric positive solutions for Lidstone problems by a generalization of the Leggett-Williams theorem [PDF]
Electronic Journal of Differential Equations, 2000 The authors deal with the existence of three positive solutions to the so-called Lidstone BVP \[ y^{(4)}=f(y,-y''), 0\leq t\leq 1, y(0)=y''(0)=y(1)=y''(1)=0. \] These solutions are required to be symmetric in the sense that they satisfy \(y(t)=y(1-t),\) for all \(t\in[0,1].\) The paper is organized as follows: In section 2 the authors provide some ...
Richard I. Avery +2 more
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An extension of Leggett-Williams norm-type theorem for coincidences and its application
, 2011 The author proves several modifications of the Leggett-Williams norm-type theorems for coincidences due to \textit{D. O'Regan} and \textit{M. Zima} [Arch. Math. 87, No. 3, 233--244 (2006; Zbl 1109.47051)]. Namely, the existence of positive solutions for the equation \(Mx=Nx\) is considered.
Yang, Aijun
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Trait-Based Drivers of Host Specificity in Freshwater Mussel-Fish Parasitic Interactions. [PDF]
Ecol EvolFreshwater mussels (Unionidae) rely on an obligate parasitic larval stage on fish hosts, yet their host specificity remains poorly understood in a broader ecological and evolutionary context. By integrating phylogenetic, life‐history, and host‐use data, we show that host phylogenetic specificity is conserved but varies systematically with mussel life ...
Sánchez González I, Park AW, Capps KA.
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Fractal and Fractional, 2023 In this paper, by using the Leggett–Williams fixed-point theorem, we study the existence of positive solutions to fractional differential equations with mixed Riemann–Liouville and quantum fractional derivatives.
Nemat Nyamoradi +2 more
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Abstract and Applied Analysis, 2013 Positive solutions for a kind of third-order multipoint boundary value problem under the non-resonant conditions and the resonant conditions are considered. In the nonresonant case, by using Leggett-Williams fixed-point theorem, the existence of at least
Liu Yang +3 more
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Abstract and Applied Analysis, 2013 Positive solutions for a kind of third-order multipoint boundary value problem under the nonresonant conditions and the resonant conditions are considered.
Liu Yang, Chunfang Shen, Dapeng Xie
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Discrete Dynamics in Nature and Society, 2012 We study the nonlinear nonhomogeneous n-point generalized Sturm-Liouville fourth-order p-Laplacian boundary value problem by using Leray-Schauder nonlinear alternative and Leggett-Williams fixed-point theorem.
Jian Liu, Zengqin Zhao
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Annals of the West University of Timisoara: Mathematics and Computer Science, 2015 In this paper we investigate the existence three positives solutions by using Leggett-Williams fixed point theorem in cones for three boundary value problem with fractional order and infinite delay.
Benaouda Hedia
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Violation of a Leggett-Garg inequality with ideal non-invasive measurements [PDF]
, 2012 The quantum superposition principle states that an entity can exist in two different states simultaneously, counter to our 'classical' intuition. Is it possible to understand a given system's behaviour without such a concept?
Pohl, Hans-Joachim +23 more
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Advances in Difference Equations, 2009 By using the Leggett-Williams fixed point theorem, the existence of three positive solutions to a class of nonlinear first-order periodic boundary value problems of impulsive dynamic equations on time scales with parameter are obtained.
Da-Bin Wang, Wen Guan
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