Abstract
A compact quadratic spline collocation (QSC) method for the time-fractional Black–Scholes model governing European option pricing is presented. Firstly, after eliminating the convection term by an exponential transformation, the time-fractional Black–Scholes equation is transformed to a time-fractional sub-diffusion equation. Then applying \(L1 - 2\) formula for the Caputo time-fractional derivative and using a collocation method based on quadratic B-spline basic functions for the space discretization, we establish a higher accuracy numerical scheme which yields \(3-\alpha \) order convergence in time and fourth-order convergence in space. Furthermore, the uniqueness of the numerical solution and the convergence of the algorithm are investigated. Finally, numerical experiments are carried out to verify the theoretical order of accuracy and demonstrate the effectiveness of the new technique. Moreover, we also study the effect of different parameters on option price in time-fractional Black–Scholes model.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Nos. 11701197 and 11701196), the Fundamental Research Funds for the Central Universities (No. ZQN-702), the Promotion Program for Young and Middle-aged Teacher in Science and Technology Research of Huaqiao University(No. ZQN-YX502). Thanks to the editor and reviewers for their valuable comments and suggestions which helped us to improve the results of this paper.
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Tian, Z., Zhai, S., Ji, H. et al. A compact quadratic spline collocation method for the time-fractional Black–Scholes model. J. Appl. Math. Comput. 66, 327–350 (2021). https://doi.org/10.1007/s12190-020-01439-z
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DOI: https://doi.org/10.1007/s12190-020-01439-z