A Weighted Finite Difference Method For Subdiffusive Black-Scholes Model
Computers & Mathematics With Applications(2020)
Abstract
In this paper we focus on the subdiffusive Black-Scholes (B-S) model. The main part of our work consists of the finite difference method as a numerical approach to the option pricing in the considered model. We find the governing fractional differential equation and the related weighted numerical scheme being a generalization of the classical Crank-Nicolson (C-N) scheme. The proposed method has 2 - alpha order of accuracy with respect to time where alpha is an element of (0, 1) is the subdiffusion parameter, and 2 with respect to space. Further, we provide the stability and convergence analysis. Finally, we present some numerical results. (C) 2020 Elsevier Ltd. All rights reserved.
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Key words
Weighted finite difference method,Subdiffusion,Time fractional Black-Scholes model,European option,Caputo fractional derivative
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