Peano Theorems for Pedjeu–Ladde-Type Multi-Time Scale Stochastic Differential Equations Driven by Fractional Noises

Arcady Ponosov and Lev Idels ()
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Arcady Ponosov: Department of Mathematics, Norwegian University of Life Sciences, 1432 Aas, Norway
Lev Idels: Department of Mathematics, Vancouver Island University, 900 Fifth St., Nanaimo, BC V9S 5S5, Canada

Mathematics, 2025, vol. 13, issue 2, 1-21

Abstract: This paper examines fractional multi-time scale stochastic functional differential equations that, in addition, are driven by fractional noises. Based on a specially crafted fixed-point principle for the so-called “local operators”, we prove a Peano-type theorem on the existence of weak solutions, that is, those defined on an extended stochastic basis. To encompass all commonly used particular classes of fractional multi-time scale stochastic models, including those with random delays and impulses at random times, we consider equations with nonlinear random Volterra operators rather than functions. Some crucial properties of the associated integral operators, needed for the proofs of the main results, are studied as well. To illustrate major findings, several existence theorems, generalizing those known in the literature, are offered, with the emphasis put on the most popular examples such as ordinary stochastic differential equations driven by fractional noises, fractional stochastic differential equations with variable delays and fractional stochastic neutral differential equations.

Keywords: fixed-point principle; fractional calculus; multi-time scales; Peano’s theorem; stochastic differential equations; Volterra operators (search for similar items in EconPapers)
JEL-codes: C (search for similar items in EconPapers)
Date: 2025
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