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arXiv 2102.08536math.PR
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II型倒向随机Volterra积分方程的适应M-解的逼近

Approximations for adapted M-solutions of Type-II backward stochastic Volterra integral equations

Yushi Hamaguchi, Dai Taguchi

摘要:

研究了一类II型倒向随机Volterra积分方程(BSVIE).对于适应的M-解,我们得到了两个近似结果,即一个Bundle近似和一个数值逼近. BSDES逼近是指有限的倒向随机微分方程(BSDES)系统的解收敛于原方程的适应M-解。由于BSVIEs近似,我们获得了适应的M-解决方案的II型BSVIEs的$L^2$ -时间正则性的估计。对于数值逼近,我们给出了一个向后的Euler-Maruyama格式,并证明了该格式在强$L^2$意义下收敛,收敛速度为$1/2$阶.这些结果在系数没有任何可微性条件的情况下成立。

英文摘要:

In this paper, we study a class of Type-II backward stochastic Volterra integral equations (BSVIEs). For the adapted M-solutions, we obtain two approximation results, namely, a BSDE approximation and a numerical approximation. The BSDE approximation means that the solution of a finite system of backward stochastic differential equations (BSDEs) converges to the adapted M-solution of the original equation. As a consequence of the BSDE approximation, we obtain an estimate for the $L^2$-time regularity of the adapted M-solutions of Type-II BSVIEs. For the numerical approximation, we provide a backward Euler--Maruyama scheme, and show that the scheme converges in the strong $L^2$-sense with the convergence speed of order $1/2$. These results hold true without any differentiability conditions for the coefficients.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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