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Monthly Journal: Publishes the methodological and theoretical role of mathematics and mathematical applications underpinning scientific research.

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Open Access Research Article

Exact and numerical solutions for two nonlinear regime switching models

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pp. 2385–2398Vol. 28Issue 7October 2025DOI: 10.47974/JIM-1863XML
Received:
10 Oct 2023
Published Online:
06 Oct 2025
Article type:
Research Article
Language:
EN
Article no.:
JIM-1863
Pages:
2385–2398

Abstract

This paper investigates two nonlinear Black-Scholes models, which are fundamental in options pricing under conditions where market volatility is non-constant. To address the inherent complexity in these models, a regime-switching approach is employed, decomposing each model into a system of differential equations, with each equation representing a distinct market regime. Leveraging Lie group algebra, we derive exact analytical solutions for the equations within this system, providing critical insights into the model dynamics under various regimes. Numerical solutions are obtained using the Chebyshev spectral method, a high-precision approach known for its efficiency in solving differential equations to complement the analytical results.

Keywords

Subject Classifications

17Bxx58J7065M70

References

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