On unique solutions of integral equations by progressive contractions

Graef, John R.; Tunc, Osman; Tunc, Cemil

doi:10.22034/cmde.2024.59214.2516

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	On unique solutions of integral equations by progressive contractions
Computational Methods for Differential Equations
مقاله 13، دوره 13، شماره 1، فروردین 2025، صفحه 183-189 اصل مقاله (308.97 K)
نوع مقاله: Research Paper
شناسه دیجیتال (DOI): 10.22034/cmde.2024.59214.2516
نویسندگان
John R. Graef¹؛ Osman Tunc^* ²؛ Cemil Tunc³
¹Department of Mathematics, University of Tennessee at Chattanooga, Chattanooga, TN 37403, USA.
²Department of Computer Programming, Baskale Vocational School, Van Yuzuncu Yil University, 65080, Campus, Van, Turkey.
³Department of Mathematics, Faculty of Sciences, Van Yuzuncu Yil University, 65080, Van, Turkey.
چکیده
The authors consider Hammerstein-type integral equations for the purpose of obtaining new results on the uniqueness of solutions on an infinite interval. The approach used in the proofs is based on the technique called progressive contractions due to T. A. Burton. Here the authors apply the Burton’s method to a general Hammerstein type integral equation that also yields the existence of solutions. In most of the existing literature, investigators prove uniqueness of solutions of integral equations by applying some type of fixed point theorem which can be tedious and challenging, often patching together solutions on short intervals after making complicated translations. In this article, using the progressive contractions throughout three simple short steps, each of the three steps is an elementary contraction mapping on a short interval, we improve the technique due to T. A. Burton for a general Hammerstein type integral equation and obtain the uniqueness of solutions on an infinite interval. These are advantages of the used method to prove the uniqueness of solutions.
کلیدواژه‌ها
Existence؛ Uniqueness؛ Hammerstein integral equation؛ Fixed point؛ Progressive contractions

مراجع
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On unique solutions of integral equations by progressive contractions