• Title/Summary/Keyword: Volterra-operator

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Remarks on volterra equations in Banach spaces

  • Kim, Mi-Hi
    • Communications of the Korean Mathematical Society
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    • v.12 no.4
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    • pp.1039-1064
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    • 1997
  • Existence and Uniqueness for Volterra equations (VE) with a weak regularity assumption on A, the relative closedness of A are investigaed by means of the Laplace transform theory. Also, (VE) are studied by means of the method of convoluted solution operator families.

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ON A SYSTEM OF NONLINEAR INTEGRAL EQUATION WITH HYSTERESIS

  • Darwish, M.A.
    • Journal of applied mathematics & informatics
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    • v.6 no.2
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    • pp.407-416
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    • 1999
  • In this paper we give some sufficient conditions for the existence and uniqueness of a continuous for the existence and uniqueness of a continuous slution of the system of Urysohn-Volterra equation with hysteresis.

Stability Criterion for Volterra Type Delay Difference Equations Including a Generalized Difference Operator

  • Gevgesoglu, Murat;Bolat, Yasar
    • Kyungpook Mathematical Journal
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    • v.60 no.1
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    • pp.163-175
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    • 2020
  • The stability of a class of Volterra-type difference equations that include a generalized difference operator ∆a is investigated using Krasnoselskii's fixed point theorem and some results are obtained. In addition, some examples are given to illustrate our theoretical results.

EXISTENCE AND BOUNDEDNESS OF SOLUTIONS FOR VOLTERRA DISCRETE EQUATIONS

  • Choi, Sung Kyu;Goo, Yoon Hoe;Koo, Nam Jip
    • Journal of the Chungcheong Mathematical Society
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    • v.19 no.3
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    • pp.237-244
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    • 2006
  • In this paper, we examine the existence and bounded- ness of the solutions of discrete Volterra equations $$x(n)=f(n)+\sum_{j=0}^{n}g(n,j,x(j))$$, $n{\geq}0$ and $$x(n)=f(n)+\sum_{j=0}^{n}B(n,j)x(j)$$, $n{\geq}0$.

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ESSENTIAL NORMS OF INTEGRAL OPERATORS

  • Mengestie, Tesfa
    • Journal of the Korean Mathematical Society
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    • v.56 no.2
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    • pp.523-537
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    • 2019
  • We estimate the essential norms of Volterra-type integral operators $V_g$ and $I_g$, and multiplication operators $M_g$ with holomorphic symbols g on a large class of generalized Fock spaces on the complex plane ${\mathbb{C}}$. The weights defining these spaces are radial and subjected to a mild smoothness conditions. In addition, we assume that the weights decay faster than the classical Gaussian weight. Our main result estimates the essential norms of $V_g$ in terms of an asymptotic upper bound of a quantity involving the inducing symbol g and the weight function, while the essential norms of $M_g$ and $I_g$ are shown to be comparable to their operator norms. As a means to prove our main results, we first characterized the compact composition operators acting on the spaces which is interest of its own.