Journal of Integral Equations and Applications

Memory dependent growth in sublinear Volterra differential equations

John A.D. Appleby and Denis D. Patterson

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Abstract

We investigate memory dependent asymptotic growth in scalar Volterra equations with sublinear nonlinearity. In order to obtain precise results we extensively utilize the powerful theory of regular variation. By computing the growth rate in terms of a related ordinary differential equation we show that, when the memory effect is so strong that the kernel tends to infinity, the growth rate of solutions depends explicitly upon the memory of the system. Finally, we employ a fixed point argument for determining analogous results for a perturbed Volterra equation and show that, for a sufficiently large perturbation, the solution tracks the perturbation asymptotically, even when the forcing term is potentially highly non-monotone.

Article information

Source
J. Integral Equations Applications, Volume 29, Number 4 (2017), 531-584.

Dates
First available in Project Euclid: 10 November 2017

Permanent link to this document
https://projecteuclid.org/euclid.jiea/1510282934

Digital Object Identifier
doi:10.1216/JIE-2017-29-4-531

Mathematical Reviews number (MathSciNet)
MR3722841

Zentralblatt MATH identifier
1384.45002

Subjects
Primary: 34K25: Asymptotic theory
Secondary: 34K28: Numerical approximation of solutions

Keywords
Volterra equations asymptotics subexponential growth unbounded delay regular variation

Citation

Appleby, John A.D.; Patterson, Denis D. Memory dependent growth in sublinear Volterra differential equations. J. Integral Equations Applications 29 (2017), no. 4, 531--584. doi:10.1216/JIE-2017-29-4-531. https://projecteuclid.org/euclid.jiea/1510282934


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