Semi-implicit Euler-Maruyama scheme for polynomial diffusions on the unit ball
JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS(2023)
Abstract
In this article, we consider numerical schemes for polynomial diffusions on the unit ball, which are solutions of stochastic differential equations with a diffusion coefficient of the form root 1 - |x|(2). We introduce a semi-implicit Euler-Maruyama scheme with the projection onto the unit ball and provide the L-2-rate of convergence. The main idea to consider the numerical scheme is the transformation argument introduced by Swart [29] for proving the pathwise uniqueness for some stochastic differential equation with a non-Lipschitz diffusion coefficient. (c) 2022 Elsevier Inc. All rights reserved.
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Key words
Polynomial diffusions on the unit ball,Semi-implicit Euler-Maruyama scheme,Degenerate and Holder continuous diffusion coefficient
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