Remarks on a New Variable-Coefficient Integro-Differential Equation via Inverse Operators

In this paper, we investigate functional inverse operators associated with a class of fractional integro-differential equations. We further explore the existence, uniqueness, and stability of solutions to a new integro-differential equation featuring variable coefficients and a functional boundary c...

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Main Authors: Chenkuan Li, Nate Fingas, Ying Ying Ou
Format: Article
Language:English
Published: MDPI AG 2025-06-01
Series:Fractal and Fractional
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Online Access:https://www.mdpi.com/2504-3110/9/7/404
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author Chenkuan Li
Nate Fingas
Ying Ying Ou
author_facet Chenkuan Li
Nate Fingas
Ying Ying Ou
author_sort Chenkuan Li
collection DOAJ
description In this paper, we investigate functional inverse operators associated with a class of fractional integro-differential equations. We further explore the existence, uniqueness, and stability of solutions to a new integro-differential equation featuring variable coefficients and a functional boundary condition. To demonstrate the applicability of our main theorems, we provide several examples in which we compute values of the two-parameter Mittag–Leffler functions. The proposed approach is particularly effective for addressing a wide range of integral and fractional nonlinear differential equations with initial or boundary conditions—especially those involving variable coefficients, which are typically challenging to treat using classical integral transform methods. Finally, we demonstrate a significant application of the inverse operator approach by solving a Caputo fractional convection partial differential equation in <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi mathvariant="double-struck">R</mi><mi>n</mi></msup></mrow></semantics></math></inline-formula> with an initial condition.
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spelling doaj-art-e038829a5d804237be06711bd893405a2025-08-20T03:07:58ZengMDPI AGFractal and Fractional2504-31102025-06-019740410.3390/fractalfract9070404Remarks on a New Variable-Coefficient Integro-Differential Equation via Inverse OperatorsChenkuan Li0Nate Fingas1Ying Ying Ou2Department of Mathematics and Computer Science, Brandon University, Brandon, MB R7A 6A9, CanadaDepartment of Mathematics and Computer Science, Brandon University, Brandon, MB R7A 6A9, CanadaDepartment of Mathematics and Computer Science, Brandon University, Brandon, MB R7A 6A9, CanadaIn this paper, we investigate functional inverse operators associated with a class of fractional integro-differential equations. We further explore the existence, uniqueness, and stability of solutions to a new integro-differential equation featuring variable coefficients and a functional boundary condition. To demonstrate the applicability of our main theorems, we provide several examples in which we compute values of the two-parameter Mittag–Leffler functions. The proposed approach is particularly effective for addressing a wide range of integral and fractional nonlinear differential equations with initial or boundary conditions—especially those involving variable coefficients, which are typically challenging to treat using classical integral transform methods. Finally, we demonstrate a significant application of the inverse operator approach by solving a Caputo fractional convection partial differential equation in <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mi mathvariant="double-struck">R</mi><mi>n</mi></msup></mrow></semantics></math></inline-formula> with an initial condition.https://www.mdpi.com/2504-3110/9/7/404fractional nonlinear integro-differential equationuniqueness and existenceBanach’s contractive principleLeray–Schauder’s fixed-point theoremMittag–Leffler functionfunctional inverse operator
spellingShingle Chenkuan Li
Nate Fingas
Ying Ying Ou
Remarks on a New Variable-Coefficient Integro-Differential Equation via Inverse Operators
Fractal and Fractional
fractional nonlinear integro-differential equation
uniqueness and existence
Banach’s contractive principle
Leray–Schauder’s fixed-point theorem
Mittag–Leffler function
functional inverse operator
title Remarks on a New Variable-Coefficient Integro-Differential Equation via Inverse Operators
title_full Remarks on a New Variable-Coefficient Integro-Differential Equation via Inverse Operators
title_fullStr Remarks on a New Variable-Coefficient Integro-Differential Equation via Inverse Operators
title_full_unstemmed Remarks on a New Variable-Coefficient Integro-Differential Equation via Inverse Operators
title_short Remarks on a New Variable-Coefficient Integro-Differential Equation via Inverse Operators
title_sort remarks on a new variable coefficient integro differential equation via inverse operators
topic fractional nonlinear integro-differential equation
uniqueness and existence
Banach’s contractive principle
Leray–Schauder’s fixed-point theorem
Mittag–Leffler function
functional inverse operator
url https://www.mdpi.com/2504-3110/9/7/404
work_keys_str_mv AT chenkuanli remarksonanewvariablecoefficientintegrodifferentialequationviainverseoperators
AT natefingas remarksonanewvariablecoefficientintegrodifferentialequationviainverseoperators
AT yingyingou remarksonanewvariablecoefficientintegrodifferentialequationviainverseoperators