Existence of Hilfer fractional neutral stochastic differential systems with infinite delay

• Published in: Қарағанды университетінің хабаршысы. Математика сериясы Vol. 113; no. 1; pp. 174 - 193
• Main Authors: Sivasankar, S., Udhayakumar, R., Muthukumaran, V., Gokul, G., Al-Omari, S.
• Format: Journal Article
• Language: English
• Published: Academician Ye.A. Buketov Karaganda University 01.01.2024
• Subjects: Fixed point theorem; Hilfer fractional evolution system; Measure of noncompactness; Neutral system
• ISSN: 2518-7929; 2663-5011
• DOI: 10.31489/2024m1/174-193

The goal of this study is to propose the existence of mild solutions to delay fractional neutral stochastic differential systems with almost sectorial operators involving the Hilfer fractional (HF) derivative in Hilbert space, which generalized the famous Riemann-Liouville fractional derivative. The main techniques rely on the basic principles and concepts from fractional calculus, semigroup theory, almost sectorial operators, stochastic analysis, and the Mönch fixed point theorem via the measure of noncompactness (MNC). Particularly, the existence result of the equation is obtained under some weakly compactness conditions. An example is given at the end of this article to show the applications of the obtained abstract results.