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• W4382052078 abstract "We provide a fast numerical technique for a time-fractional option pricing model with asset-price-dependent variable order. Due to the complicated variable-order fractional derivative and its related fast approximations, the temporal coefficients are coupled with the inner product of the finite element method and lose monotonicity, which introduces uncommon difficulties in numerical analysis. In addition, the Riemann-Liouville fractional operators are often used in option pricing models, but its variable-order case gets far less attention than the corresponding Caputo-type problems. We prove error estimates for the proposed fast method and show that the computational cost is almost linear with respect to the temporal steps, which is much faster than the quadratic growth of the time-stepping solver. Numerical experiments are performed to illustrate the theoretical findings." @default.
• W4382052078 created "2023-06-27" @default.
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• W4382052078 date "2023-10-01" @default.
• W4382052078 modified "2023-10-16" @default.
• W4382052078 title "Fast numerical scheme for the time-fractional option pricing model with asset-price-dependent variable order" @default.
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• W4382052078 doi "https://doi.org/10.1016/j.apnum.2023.06.014" @default.
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