Asymptotic Properties of Solutions to Discrete Volterra Monotone Type Equations

• Main Authors: Janusz Migda, Małgorzata Migda, Ewa Schmeidel
• Format: Article
• Language: English
• Published: MDPI AG 2021-05-01
• Series: Symmetry
• Subjects: discrete Volterra equation; prescribed asymptotic behavior; asymptotically polynomial solution; asymptotically periodic solution; degree of approximation
• Online Access: https://www.mdpi.com/2073-8994/13/6/918

We investigate the higher order nonlinear discrete Volterra equations. We study solutions with prescribed asymptotic behavior. For example, we establish sufficient conditions for the existence of asymptotically polynomial, asymptotically periodic or asymptotically symmetric solutions. On the other hand, we are dealing with the problem of approximation of solutions. Among others, we present conditions under which any bounded solution is asymptotically periodic. Using our techniques, based on the iterated remainder operator, we can control the degree of approximation. In this paper we choose a positive non-increasing sequence <i>u</i> and use <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi mathvariant="normal">o</mi><mo>(</mo><msub><mi>u</mi><mi>n</mi></msub><mo>)</mo></mrow></semantics></math></inline-formula> as a measure of approximation.