A Liapunov functional for a linear integral equation.
Burton, T.A. (2010)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Burton, T.A. (2010)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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O'Regan, Donal (1998)
Journal of Applied Mathematics and Stochastic Analysis
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Theodore Allen Burton, D. P. Dwiggins (2010)
Mathematica Bohemica
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In this paper we study a linear integral equation , its resolvent equation , the variation of parameters formula , and a perturbed equation. The kernel, , satisfies classical smoothness and sign conditions assumed in many real-world problems. We study the effects of perturbations of and also the limit sets of the resolvent. These results lead us to the study of nonlinear perturbations.
Stanisław Szufla (2006)
Mathematica Bohemica
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We give sufficient conditions for the existence of at least one integrable solution of equation . Our assumptions and proofs are expressed in terms of measures of noncompactness.
Chen, Lian-Ying, Zhao, Chang-Jian, Cheung, Wing-Sum (2010)
Journal of Inequalities and Applications [electronic only]
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Burton, T.A. (2008)
Electronic Journal of Qualitative Theory of Differential Equations [electronic only]
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Jozef Eliáš (1982)
Mathematica Slovaca
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Donal O'Regan (1995)
Annales Polonici Mathematici
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The Schauder-Tikhonov theorem in locally convex topological spaces and an extension of Krasnosel’skiĭ’s fixed point theorem due to Nashed and Wong are used to establish existence of and C solutions to Volterra and Hammerstein integral equations in Banach spaces.
S. Staněk (1992)
Annales Polonici Mathematici
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A differential equation of the form (q(t)k(u)u')' = λf(t)h(u)u' depending on the positive parameter λ is considered and nonnegative solutions u such that u(0) = 0, u(t) > 0 for t > 0 are studied. Some theorems about the existence, uniqueness and boundedness of solutions are given.