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Article

A Unified Approach to Solvability and Stability of Multipoint BVPs for Langevin and Sturm–Liouville Equations with CH–Fractional Derivatives and Impulses via Coincidence Theory

1
Department of Mathematics, School of Electronics & Information Engineering, Taizhou University, Taizhou 318000, China
2
School of Mathematics and Information Technology, Yuxi Normal University, Yuxi 653100, China
3
Applied Technology College, Soochow University, Suzhou 215325, China
*
Author to whom correspondence should be addressed.
Fractal Fract. 2024, 8(2), 111; https://doi.org/10.3390/fractalfract8020111
Submission received: 3 January 2024 / Revised: 6 February 2024 / Accepted: 9 February 2024 / Published: 13 February 2024

Abstract

The Langevin equation is a model for describing Brownian motion, while the Sturm–Liouville equation is an important mechanical model. This paper focuses on the solvability and stability of nonlinear impulsive Langevin and Sturm–Liouville equations with Caputo–Hadamard (CH) fractional derivatives and multipoint boundary value conditions. To unify the two types of equations, we investigate a general nonlinear impulsive coupled implicit system. By cleverly constructing relevant operators involving impulsive terms, we establish the coincidence degree theory and obtain the solvability. We explore the stability of solutions using nonlinear analysis and inequality techniques. As the most direct application, we naturally obtained the solvability and stability of the Langevin and Sturm–Liouville equations mentioned above. Finally, an example is provided to demonstrate the validity and availability of our major findings.
Keywords: impulsive coupled implicit system; CH–fractional derivative; multipoint BVP; solvability and stability; coincidence degree theory impulsive coupled implicit system; CH–fractional derivative; multipoint BVP; solvability and stability; coincidence degree theory

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MDPI and ACS Style

Zhao, K.; Liu, J.; Lv, X. A Unified Approach to Solvability and Stability of Multipoint BVPs for Langevin and Sturm–Liouville Equations with CH–Fractional Derivatives and Impulses via Coincidence Theory. Fractal Fract. 2024, 8, 111. https://doi.org/10.3390/fractalfract8020111

AMA Style

Zhao K, Liu J, Lv X. A Unified Approach to Solvability and Stability of Multipoint BVPs for Langevin and Sturm–Liouville Equations with CH–Fractional Derivatives and Impulses via Coincidence Theory. Fractal and Fractional. 2024; 8(2):111. https://doi.org/10.3390/fractalfract8020111

Chicago/Turabian Style

Zhao, Kaihong, Juqing Liu, and Xiaojun Lv. 2024. "A Unified Approach to Solvability and Stability of Multipoint BVPs for Langevin and Sturm–Liouville Equations with CH–Fractional Derivatives and Impulses via Coincidence Theory" Fractal and Fractional 8, no. 2: 111. https://doi.org/10.3390/fractalfract8020111

APA Style

Zhao, K., Liu, J., & Lv, X. (2024). A Unified Approach to Solvability and Stability of Multipoint BVPs for Langevin and Sturm–Liouville Equations with CH–Fractional Derivatives and Impulses via Coincidence Theory. Fractal and Fractional, 8(2), 111. https://doi.org/10.3390/fractalfract8020111

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