Ulam stability for nonlinear boundary value problems for impulsive Caputo type fractional delay differential equations

Abstract In this paper we consider impulsive delay differential equations with the Caputo fractional derivative with respect to another function on a finite interval. We set up and study a problem that consists of an initial condition on the initial time interval and a nonlinear boundary condition....

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Main Authors: Ravi P. Agarwal, Snezhana Hristova, Donal O’Regan
Format: Article
Language:English
Published: SpringerOpen 2025-04-01
Series:Boundary Value Problems
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Online Access:https://doi.org/10.1186/s13661-025-02045-3
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author Ravi P. Agarwal
Snezhana Hristova
Donal O’Regan
author_facet Ravi P. Agarwal
Snezhana Hristova
Donal O’Regan
author_sort Ravi P. Agarwal
collection DOAJ
description Abstract In this paper we consider impulsive delay differential equations with the Caputo fractional derivative with respect to another function on a finite interval. We set up and study a problem that consists of an initial condition on the initial time interval and a nonlinear boundary condition. This mixed boundary value problem depends on a parameter. We obtain an integral presentation of the solution and establish the existence and uniqueness of the solution for any value of the real valued parameter. We discuss the Ulam type stability for boundary value problems and, based on the application of an appropriate modification of the classical definition, we suggest a way to study this type of stability. We keep the idea that the solution of the studied problem will depend significantly on the chosen solution of the corresponding differential inequality, and this is based on an appropriate choice of the parameter involved in the boundary condition. Some examples are given to illustrate the theoretical results.
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issn 1687-2770
language English
publishDate 2025-04-01
publisher SpringerOpen
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series Boundary Value Problems
spelling doaj-art-e2fe3351fa4a418f8cfa2ea8cb2c5a032025-08-20T03:07:43ZengSpringerOpenBoundary Value Problems1687-27702025-04-012025112010.1186/s13661-025-02045-3Ulam stability for nonlinear boundary value problems for impulsive Caputo type fractional delay differential equationsRavi P. Agarwal0Snezhana Hristova1Donal O’Regan2Department of Mathematics and Systems Engineering, Florida Institute of TechnologyFaculty of Mathematics and Informatics, Plovdiv UniversitySchool of Mathematical and Statistical Sciences, University of GalwayAbstract In this paper we consider impulsive delay differential equations with the Caputo fractional derivative with respect to another function on a finite interval. We set up and study a problem that consists of an initial condition on the initial time interval and a nonlinear boundary condition. This mixed boundary value problem depends on a parameter. We obtain an integral presentation of the solution and establish the existence and uniqueness of the solution for any value of the real valued parameter. We discuss the Ulam type stability for boundary value problems and, based on the application of an appropriate modification of the classical definition, we suggest a way to study this type of stability. We keep the idea that the solution of the studied problem will depend significantly on the chosen solution of the corresponding differential inequality, and this is based on an appropriate choice of the parameter involved in the boundary condition. Some examples are given to illustrate the theoretical results.https://doi.org/10.1186/s13661-025-02045-3Caputo type fractional derivative with respect to another functionFractional differential equationDelayImpulsesBoundary value problemUlam type stability
spellingShingle Ravi P. Agarwal
Snezhana Hristova
Donal O’Regan
Ulam stability for nonlinear boundary value problems for impulsive Caputo type fractional delay differential equations
Boundary Value Problems
Caputo type fractional derivative with respect to another function
Fractional differential equation
Delay
Impulses
Boundary value problem
Ulam type stability
title Ulam stability for nonlinear boundary value problems for impulsive Caputo type fractional delay differential equations
title_full Ulam stability for nonlinear boundary value problems for impulsive Caputo type fractional delay differential equations
title_fullStr Ulam stability for nonlinear boundary value problems for impulsive Caputo type fractional delay differential equations
title_full_unstemmed Ulam stability for nonlinear boundary value problems for impulsive Caputo type fractional delay differential equations
title_short Ulam stability for nonlinear boundary value problems for impulsive Caputo type fractional delay differential equations
title_sort ulam stability for nonlinear boundary value problems for impulsive caputo type fractional delay differential equations
topic Caputo type fractional derivative with respect to another function
Fractional differential equation
Delay
Impulses
Boundary value problem
Ulam type stability
url https://doi.org/10.1186/s13661-025-02045-3
work_keys_str_mv AT ravipagarwal ulamstabilityfornonlinearboundaryvalueproblemsforimpulsivecaputotypefractionaldelaydifferentialequations
AT snezhanahristova ulamstabilityfornonlinearboundaryvalueproblemsforimpulsivecaputotypefractionaldelaydifferentialequations
AT donaloregan ulamstabilityfornonlinearboundaryvalueproblemsforimpulsivecaputotypefractionaldelaydifferentialequations