Sivaporn Ampun.. Fractional Black-Scholes equations with application to European call options. Doctoral Degree(Applied Mathematics). King Mongkut's University of Technology North Bangkok. Central Library. : King Mongkut's University of Technology North Bangkok, 2023.
Fractional Black-Scholes equations with application to European call options
Abstract:
The Black-Scholes equation was initially proposed by Fischer Black and Myron Scholes in
1973 as a partial differential equation that provides a mathematical framework for determining the fair price of a financial option. This equation takes into account several factors, including the underlying asset price, the option's strike price, time until expiration, and market volatility.
A primary objective of this thesis is to modify the classical Black-Scholes equations with one and two assets in the form of fractional-order Black-Scholes equations in order to determine option prices more accurately and suitably for the modern situation. In particular, the one asset equation is converted into a time-fractional equation using the Katumgapola fractional derivative and the two asset equation is converted into a fractional differential equation using the Riemann-Liouville fractional derivative.
Approximate analytic solutions are obtained for the one asset equation using a generalized
Laplace homotopy perturbation method and approximate analytical solutions are obtained for the two asset equation using a generalized Laplace variational method. In both cases, the existence and uniqueness of solutions are proved for the modified fractional-order Black-Scholes equations.
The results obtained in this thesis show that the generalized Laplace homotopy perturbation method and the generalized Laplace variational iterative method are effective methods for finding approximate analytical solutions for fractional-order partial differential equations of the Black-Scholes type.