# American Institute of Mathematical Sciences

February  2019, 24(2): 695-717. doi: 10.3934/dcdsb.2018203

## Convergence rate and stability of the split-step theta method for stochastic differential equations with piecewise continuous arguments

 Department of Mathematics, Harbin Institute of Technology, Harbin, China, 150001

* Corresponding author: Minghui Song

Received  July 2017 Revised  March 2018 Published  February 2019 Early access  June 2018

Fund Project: This work is supported by the NSF of P.R. China (No.11671113).

In this paper, we investigate the strong convergence rate of the split-step theta (SST) method for a kind of stochastic differential equations with piecewise continuous arguments (SDEPCAs) under some polynomially growing conditions. It is shown that the SST method with $θ∈[\frac{1}{2},1]$ is strongly convergent with order $\frac{1}{2}$ in $p$th($p≥ 2$) moment if both drift and diffusion coefficients are polynomially growing with regard to the delay terms, while the diffusion coefficients are globally Lipschitz continuous in non-delay arguments. The exponential mean square stability of the improved split-step theta (ISST) method is also studied without the linear growth condition. With some relaxed restrictions on the step-size, it is proved that the ISST method with $θ∈(\frac{1}{2},1]$ is exponentially mean square stable under the monotone condition. Without any restriction on the step-size, there exists $θ^*∈(\frac{1}{2},1]$ such that the ISST method with $θ∈(θ^*,1]$ is exponentially stable in mean square. Some numerical simulations are presented to illustrate the analytical theory.

Citation: Yulan Lu, Minghui Song, Mingzhu Liu. Convergence rate and stability of the split-step theta method for stochastic differential equations with piecewise continuous arguments. Discrete and Continuous Dynamical Systems - B, 2019, 24 (2) : 695-717. doi: 10.3934/dcdsb.2018203
##### References:
 [1] J. H. Bao and C. G. Yuan, Convergence rate of EM scheme for SDDEs, Proc. Amer. Math. Soc., 141 (2013), 3231-3243.  doi: 10.1090/S0002-9939-2013-11886-1. [2] W. J. Beyn, E. Isaak and R. Kruse, Stochastic C-stability and B-consistency of explicit and implicit Euler-type schemes, J. Sci. Comput., 67 (2016), 955-987.  doi: 10.1007/s10915-015-0114-4. [3] W. J. Beyn, E. Isaak and R. Kruse, Stochastic C-stability and B-consistency of explicit and implicit Milstein-type schemes, J. Sci. Comput., 70 (2017), 1042-1077.  doi: 10.1007/s10915-016-0290-x. [4] K. Dareiotis, C. Kumar and S. Sabanis, On tamed Euler approximations of SDEs driven by Lévy noise with applications to delay equations, SIAM J. Numer. Anal., 54 (2016), 1840-1872.  doi: 10.1137/151004872. [5] Q. Guo, W. Liu, X. R. Mao and R. X. Yue, The partially truncated Euler-Maruyama method and its stability and boundedness, Appl. Numer. Math., 115 (2017), 235-251.  doi: 10.1016/j.apnum.2017.01.010. [6] D. J. Higham, X. R. Mao and A. M. Stuart, Strong convergence of Euler-type methods for nonlinear stochastic differential equations, SIAM J. Numer. Anal., 40 (2002), 1041-1063.  doi: 10.1137/S0036142901389530. [7] Y. Z. Hu, Semi-implicit Euler-Maruyama scheme for stiff stochastic equations, Progr. Probab., 38 (1996), 183-202. [8] C. M. Huang, Exponential mean square stability of numerical methods for systems of stochastic differential equations, J. Comput. Appl. Math., 236 (2012), 4016-4026.  doi: 10.1016/j.cam.2012.03.005. [9] C. M. Huang, Mean square stability and dissipativity of two classes of theta methods for systems of stochastic delay differential equations, J. Comput. Appl. Math., 259 (2014), 77-86.  doi: 10.1016/j.cam.2013.03.038. [10] M. Hutzenthaler, A. Jentzen and P. E. Kloeden, Strong and weak divergence in finite time of Euler's method for stochastic differential equations with non-globally Lipschitz continuous coefficients, Proc. R. Soc. Lond. Ser. A Math. Phys. Eng. Sci., 467 (2011), 1563-1576.  doi: 10.1098/rspa.2010.0348. [11] M. Hutzenthaler, A. Jentzen and P. E. Kloeden, Strong convergence of an explicit numerical method for SDEs with nonglobally Lipschitz continuous coefficients, Ann. Appl. Probab., 22 (2012), 1611-1641.  doi: 10.1214/11-AAP803. [12] P. E. Kloeden and E. Platen, Numerical Solution of Stochastic Differential Equations, Springer, Berlin, 1992. doi: 10.1007/978-3-662-12616-5. [13] C. Kumar and S. Sabanis, Strong convergence of Euler approximations of stochastic differential equations with delay under local Lipschitz condition, Stoch. Anal. Appl., 32 (2014), 207-228.  doi: 10.1080/07362994.2014.858552. [14] W. Liu and X. R. Mao, Strong convergence of the stopped Euler-Maruyama method for nonlinear stochastic differential equations, J. Comput. Appl. Math., 223 (2013), 389-400.  doi: 10.1016/j.amc.2013.08.023. [15] Y. L. Lu, M. H. Song and M. Z. Liu, Convergence and stability of the split-step theta method for stochastic differential equations with piecewise continuous arguments, J. Comput. Appl. Math., 317 (2017), 55-71.  doi: 10.1016/j.cam.2016.11.033. [16] X. R. Mao, Stabilization of continuous-time hybrid stochastic differential equations by discrete-time feedback control, Automatica J. IFAC, 49 (2013), 3677-3681.  doi: 10.1016/j.automatica.2013.09.005. [17] X. R. Mao and L. Szpruch, Strong convergence rates for backward Euler-Maruyama method for non-linear dissipative-type stochastic differential equations with super-linear diffusion coefficients, Stochastics, 85 (2013), 144-171.  doi: 10.1080/17442508.2011.651213. [18] X. R. Mao, W. Liu, L. J. Hu, Q. Luo and J. Q. Lu, Stabilization of hybrid stochastic differential equations by feedback control based on discrete-time state observations, Systems Control Lett., 73 (2014), 88-95.  doi: 10.1016/j.sysconle.2014.08.011. [19] X. R. Mao, The truncated Euler-Maruyama method for stochastic differential equations, J. Comput. Appl. Math., 290 (2015), 370-384.  doi: 10.1016/j.cam.2015.06.002. [20] X. R. Mao, Convergence rates of the truncated Euler-Maruyama method for stochastic differential equations, J. Comput. Appl. Math., 296 (2016), 362-375.  doi: 10.1016/j.cam.2015.09.035. [21] M. Milošević, The Euler-Maruyama approximation of solutions to stochastic differential equations with piecewise constant arguments, J. Comput. Appl. Math., 298 (2016), 1-12.  doi: 10.1016/j.cam.2015.11.019. [22] M. Milošević, Convergence and almost sure exponential stability of implicit numerical methods for a class of highly nonlinear neutral stochastic differential equations with constant delay, J. Comput. Appl. Math., 280 (2015), 248-264.  doi: 10.1016/j.cam.2014.12.002. [23] Y. Saito and T. Mitsui, Stability analysis of numerical schemes for stochastic differential equations, SIAM J. Numer. Anal., 33 (1996), 2254-2267.  doi: 10.1137/S0036142992228409. [24] M. H. Song and L. Zhang, Numerical solutions of stochastic differential equations with piecewise continuous arguments under Khasminskii-Type conditions, J. Appl. Math., 2012 (2012), Art. ID 696849, 21 pp. [25] M. V. Tretyakov and Z. Q. Zhang, A fundamental mean-square convergence theorem for SDEs with locally Lipschitz coefficients and its applications, SIAM J. Numer. Anal., 51 (2013), 3135-3162.  doi: 10.1137/120902318. [26] X. J. Wang and S. Q. Gan, The tamed Milstein method for commutative stochastic differential equations with non-globally Lipschitz continuous coefficients, J. Difference Equ. Appl., 19 (2013), 466-490.  doi: 10.1080/10236198.2012.656617. [27] F. K. Wu, X. R. Mao and K. Chen, The Cox-Ingersoll-Ross model with delay and strong convergence of its Euler-Maruyama approximate solutions, Appl. Numer. Math., 59 (2009), 2641-2658.  doi: 10.1016/j.apnum.2009.03.004. [28] S. R. You, W. Liu, J. Q. Lu, X. R. Mao and Q. W. Qiu, Stabilization of hybrid systems by feedback control based on discrete-time state observations, SIAM J. Control Optim., 53 (2015), 905-925.  doi: 10.1137/140985779. [29] L. Zhang and M. H. Song, Convergence of the Euler method of stochastic differential equations with piecewise continuous arguments, Abstr. Appl. Anal., 2012 (2012), Art. ID 643783, 16 pp. [30] S. B. Zhou, Strong convergence and stability of backward Euler-Maruyama scheme for highly nonlinear hybrid stochastic differential delay equation, Calcolo, 52 (2015), 445-473.  doi: 10.1007/s10092-014-0124-x. [31] X. F. Zong, F. K. Wu and C. M. Huang, Theta schemes for SDDEs with non-globally Lipschitz continuous coefficients, J. Comput. Appl. Math., 278 (2015), 258-277.  doi: 10.1016/j.cam.2014.10.014.

show all references

##### References:
 [1] J. H. Bao and C. G. Yuan, Convergence rate of EM scheme for SDDEs, Proc. Amer. Math. Soc., 141 (2013), 3231-3243.  doi: 10.1090/S0002-9939-2013-11886-1. [2] W. J. Beyn, E. Isaak and R. Kruse, Stochastic C-stability and B-consistency of explicit and implicit Euler-type schemes, J. Sci. Comput., 67 (2016), 955-987.  doi: 10.1007/s10915-015-0114-4. [3] W. J. Beyn, E. Isaak and R. Kruse, Stochastic C-stability and B-consistency of explicit and implicit Milstein-type schemes, J. Sci. Comput., 70 (2017), 1042-1077.  doi: 10.1007/s10915-016-0290-x. [4] K. Dareiotis, C. Kumar and S. Sabanis, On tamed Euler approximations of SDEs driven by Lévy noise with applications to delay equations, SIAM J. Numer. Anal., 54 (2016), 1840-1872.  doi: 10.1137/151004872. [5] Q. Guo, W. Liu, X. R. Mao and R. X. Yue, The partially truncated Euler-Maruyama method and its stability and boundedness, Appl. Numer. Math., 115 (2017), 235-251.  doi: 10.1016/j.apnum.2017.01.010. [6] D. J. Higham, X. R. Mao and A. M. Stuart, Strong convergence of Euler-type methods for nonlinear stochastic differential equations, SIAM J. Numer. Anal., 40 (2002), 1041-1063.  doi: 10.1137/S0036142901389530. [7] Y. Z. Hu, Semi-implicit Euler-Maruyama scheme for stiff stochastic equations, Progr. Probab., 38 (1996), 183-202. [8] C. M. Huang, Exponential mean square stability of numerical methods for systems of stochastic differential equations, J. Comput. Appl. Math., 236 (2012), 4016-4026.  doi: 10.1016/j.cam.2012.03.005. [9] C. M. Huang, Mean square stability and dissipativity of two classes of theta methods for systems of stochastic delay differential equations, J. Comput. Appl. Math., 259 (2014), 77-86.  doi: 10.1016/j.cam.2013.03.038. [10] M. Hutzenthaler, A. Jentzen and P. E. Kloeden, Strong and weak divergence in finite time of Euler's method for stochastic differential equations with non-globally Lipschitz continuous coefficients, Proc. R. Soc. Lond. Ser. A Math. Phys. Eng. Sci., 467 (2011), 1563-1576.  doi: 10.1098/rspa.2010.0348. [11] M. Hutzenthaler, A. Jentzen and P. E. Kloeden, Strong convergence of an explicit numerical method for SDEs with nonglobally Lipschitz continuous coefficients, Ann. Appl. Probab., 22 (2012), 1611-1641.  doi: 10.1214/11-AAP803. [12] P. E. Kloeden and E. Platen, Numerical Solution of Stochastic Differential Equations, Springer, Berlin, 1992. doi: 10.1007/978-3-662-12616-5. [13] C. Kumar and S. Sabanis, Strong convergence of Euler approximations of stochastic differential equations with delay under local Lipschitz condition, Stoch. Anal. Appl., 32 (2014), 207-228.  doi: 10.1080/07362994.2014.858552. [14] W. Liu and X. R. Mao, Strong convergence of the stopped Euler-Maruyama method for nonlinear stochastic differential equations, J. Comput. Appl. Math., 223 (2013), 389-400.  doi: 10.1016/j.amc.2013.08.023. [15] Y. L. Lu, M. H. Song and M. Z. Liu, Convergence and stability of the split-step theta method for stochastic differential equations with piecewise continuous arguments, J. Comput. Appl. Math., 317 (2017), 55-71.  doi: 10.1016/j.cam.2016.11.033. [16] X. R. Mao, Stabilization of continuous-time hybrid stochastic differential equations by discrete-time feedback control, Automatica J. IFAC, 49 (2013), 3677-3681.  doi: 10.1016/j.automatica.2013.09.005. [17] X. R. Mao and L. Szpruch, Strong convergence rates for backward Euler-Maruyama method for non-linear dissipative-type stochastic differential equations with super-linear diffusion coefficients, Stochastics, 85 (2013), 144-171.  doi: 10.1080/17442508.2011.651213. [18] X. R. Mao, W. Liu, L. J. Hu, Q. Luo and J. Q. Lu, Stabilization of hybrid stochastic differential equations by feedback control based on discrete-time state observations, Systems Control Lett., 73 (2014), 88-95.  doi: 10.1016/j.sysconle.2014.08.011. [19] X. R. Mao, The truncated Euler-Maruyama method for stochastic differential equations, J. Comput. Appl. Math., 290 (2015), 370-384.  doi: 10.1016/j.cam.2015.06.002. [20] X. R. Mao, Convergence rates of the truncated Euler-Maruyama method for stochastic differential equations, J. Comput. Appl. Math., 296 (2016), 362-375.  doi: 10.1016/j.cam.2015.09.035. [21] M. Milošević, The Euler-Maruyama approximation of solutions to stochastic differential equations with piecewise constant arguments, J. Comput. Appl. Math., 298 (2016), 1-12.  doi: 10.1016/j.cam.2015.11.019. [22] M. Milošević, Convergence and almost sure exponential stability of implicit numerical methods for a class of highly nonlinear neutral stochastic differential equations with constant delay, J. Comput. Appl. Math., 280 (2015), 248-264.  doi: 10.1016/j.cam.2014.12.002. [23] Y. Saito and T. Mitsui, Stability analysis of numerical schemes for stochastic differential equations, SIAM J. Numer. Anal., 33 (1996), 2254-2267.  doi: 10.1137/S0036142992228409. [24] M. H. Song and L. Zhang, Numerical solutions of stochastic differential equations with piecewise continuous arguments under Khasminskii-Type conditions, J. Appl. Math., 2012 (2012), Art. ID 696849, 21 pp. [25] M. V. Tretyakov and Z. Q. Zhang, A fundamental mean-square convergence theorem for SDEs with locally Lipschitz coefficients and its applications, SIAM J. Numer. Anal., 51 (2013), 3135-3162.  doi: 10.1137/120902318. [26] X. J. Wang and S. Q. Gan, The tamed Milstein method for commutative stochastic differential equations with non-globally Lipschitz continuous coefficients, J. Difference Equ. Appl., 19 (2013), 466-490.  doi: 10.1080/10236198.2012.656617. [27] F. K. Wu, X. R. Mao and K. Chen, The Cox-Ingersoll-Ross model with delay and strong convergence of its Euler-Maruyama approximate solutions, Appl. Numer. Math., 59 (2009), 2641-2658.  doi: 10.1016/j.apnum.2009.03.004. [28] S. R. You, W. Liu, J. Q. Lu, X. R. Mao and Q. W. Qiu, Stabilization of hybrid systems by feedback control based on discrete-time state observations, SIAM J. Control Optim., 53 (2015), 905-925.  doi: 10.1137/140985779. [29] L. Zhang and M. H. Song, Convergence of the Euler method of stochastic differential equations with piecewise continuous arguments, Abstr. Appl. Anal., 2012 (2012), Art. ID 643783, 16 pp. [30] S. B. Zhou, Strong convergence and stability of backward Euler-Maruyama scheme for highly nonlinear hybrid stochastic differential delay equation, Calcolo, 52 (2015), 445-473.  doi: 10.1007/s10092-014-0124-x. [31] X. F. Zong, F. K. Wu and C. M. Huang, Theta schemes for SDDEs with non-globally Lipschitz continuous coefficients, J. Comput. Appl. Math., 278 (2015), 258-277.  doi: 10.1016/j.cam.2014.10.014.
(a) The mean square errors. (b) The 3th moment errors
(a) The mean square errors. (b) The 3th moment errors
(a) $a = -3,~b = 0,~c = 1$. (b) $a = -1.8,~b = 0.4,~c = 0.7$
Mean square errors $\mathbb{E}|x(5)-x_{5m}|^2$
 step size $h$ $\theta=0.5$ $\theta=0.75$ $\theta=1$ $\epsilon(5)$ rate $\epsilon(5)$ rate $\epsilon(5)$ rate $2^{-6}$ $0.2330e-04$ $*$ $0.2121e-04$ $*$ $0.1974e-04$ $*$ $2^{-7}$ $0.1037e-04$ $2.2469$ $0.0982e-04$ $2.1599$ $0.0943e-04$ $2.0933$ $2^{-8}$ $0.0444e-04$ $2.3356$ $0.0435e-04$ $2.2575$ $0.0414e-04$ $2.2778$ $2^{-9}$ $0.0184e-04$ $2.4130$ $0.0179e-04$ $2.4302$ $0.0175e-04$ $2.3657$ $2^{-10}$ $0.0096e-04$ $1.9167$ $0.0096e-04$ $1.8646$ $0.0096e-04$ $1.8229$ $2^{-11}$ $0.0040e-04$ $2.4000$ $0.0040e-04$ $2.4000$ $0.0040e-04$ $2.4000$
 step size $h$ $\theta=0.5$ $\theta=0.75$ $\theta=1$ $\epsilon(5)$ rate $\epsilon(5)$ rate $\epsilon(5)$ rate $2^{-6}$ $0.2330e-04$ $*$ $0.2121e-04$ $*$ $0.1974e-04$ $*$ $2^{-7}$ $0.1037e-04$ $2.2469$ $0.0982e-04$ $2.1599$ $0.0943e-04$ $2.0933$ $2^{-8}$ $0.0444e-04$ $2.3356$ $0.0435e-04$ $2.2575$ $0.0414e-04$ $2.2778$ $2^{-9}$ $0.0184e-04$ $2.4130$ $0.0179e-04$ $2.4302$ $0.0175e-04$ $2.3657$ $2^{-10}$ $0.0096e-04$ $1.9167$ $0.0096e-04$ $1.8646$ $0.0096e-04$ $1.8229$ $2^{-11}$ $0.0040e-04$ $2.4000$ $0.0040e-04$ $2.4000$ $0.0040e-04$ $2.4000$
The $3$th moment errors $\mathbb{E}|x(5)-x_{5m}|^3$
 step size $h$ $\theta=0.5$ $\theta=0.75$ $\theta=1$ $\epsilon(5)$ rate $\epsilon(5)$ rate $\epsilon(5)$ rate $2^{-6}$ $0.4083e-06$ $*$ $0.4032e-06$ $*$ $0.4039e-06$ $*$ $2^{-7}$ $0.1266e-06$ $3.2251$ $0.1245e-06$ $3.2386$ $0.1203e-06$ $3.3574$ $2^{-8}$ $0.0373e-06$ $3.3941$ $0.0364e-06$ $3.4203$ $0.0352e-06$ $3.4176$ $2^{-9}$ $0.0127e-06$ $2.9370$ $0.0115e-06$ $3.1652$ $0.0093e-06$ $3.7849$ $2^{-10}$ $0.0067e-06$ $1.8955$ $0.0055e-06$ $2.0909$ $0.0049e-06$ $1.8980$ $2^{-11}$ $0.0011e-06$ $6.0909$ $0.0011e-06$ $5.0000$ $0.0011e-06$ $4.4545$
 step size $h$ $\theta=0.5$ $\theta=0.75$ $\theta=1$ $\epsilon(5)$ rate $\epsilon(5)$ rate $\epsilon(5)$ rate $2^{-6}$ $0.4083e-06$ $*$ $0.4032e-06$ $*$ $0.4039e-06$ $*$ $2^{-7}$ $0.1266e-06$ $3.2251$ $0.1245e-06$ $3.2386$ $0.1203e-06$ $3.3574$ $2^{-8}$ $0.0373e-06$ $3.3941$ $0.0364e-06$ $3.4203$ $0.0352e-06$ $3.4176$ $2^{-9}$ $0.0127e-06$ $2.9370$ $0.0115e-06$ $3.1652$ $0.0093e-06$ $3.7849$ $2^{-10}$ $0.0067e-06$ $1.8955$ $0.0055e-06$ $2.0909$ $0.0049e-06$ $1.8980$ $2^{-11}$ $0.0011e-06$ $6.0909$ $0.0011e-06$ $5.0000$ $0.0011e-06$ $4.4545$
Mean square errors $\mathbb{E}|x(3)-x_{3m}|^2$
 step size $h$ $\theta=0.5$ $\theta=0.75$ $\theta=1$ $\epsilon(3)$ rate $\epsilon(3)$ rate $\epsilon(3)$ rate $2^{-6}$ $1.0839e-04$ $*$ $1.0689e-03$ $*$ $1.0578e-03$ $*$ $2^{-7}$ $5.1071e-04$ $2.1223$ $5.0147e-04$ $2.1315$ $4.9992e-04$ $2.1159$ $2^{-8}$ $2.6099e-04$ $1.9568$ $2.5515e-04$ $2.1000$ $2.5056e-04$ $1.9952$ $2^{-9}$ $1.2395e-04$ $2.1056$ $1.2150e-04$ $1.9158$ $1.1603e-04$ $2.1592$ $2^{-10}$ $0.6654e-04$ $1.8628$ $0.6342e-04$ $1.8646$ $0.5864e-04$ $1.9787$ $2^{-11}$ $0.3179e-04$ $2.0931$ $0.3155e-04$ $2.0101$ $0.3124e-04$ $1.8770$
 step size $h$ $\theta=0.5$ $\theta=0.75$ $\theta=1$ $\epsilon(3)$ rate $\epsilon(3)$ rate $\epsilon(3)$ rate $2^{-6}$ $1.0839e-04$ $*$ $1.0689e-03$ $*$ $1.0578e-03$ $*$ $2^{-7}$ $5.1071e-04$ $2.1223$ $5.0147e-04$ $2.1315$ $4.9992e-04$ $2.1159$ $2^{-8}$ $2.6099e-04$ $1.9568$ $2.5515e-04$ $2.1000$ $2.5056e-04$ $1.9952$ $2^{-9}$ $1.2395e-04$ $2.1056$ $1.2150e-04$ $1.9158$ $1.1603e-04$ $2.1592$ $2^{-10}$ $0.6654e-04$ $1.8628$ $0.6342e-04$ $1.8646$ $0.5864e-04$ $1.9787$ $2^{-11}$ $0.3179e-04$ $2.0931$ $0.3155e-04$ $2.0101$ $0.3124e-04$ $1.8770$
The $3$th moment errors $\mathbb{E}|x(3)-x_{3m}|^3$
 step size $h$ $\theta=0.5$ $\theta=0.75$ $\theta=1$ $\epsilon(3)$ rate $\epsilon(3)$ rate $\epsilon(3)$ rate $2^{-6}$ $3.4673e-05$ $*$ $3.4000e-05$ $*$ $3.3598e-05$ $*$ $2^{-7}$ $1.0647e-05$ $3.2566$ $1.0435e-05$ $3.2583$ $1.0150e-05$ $3.3101$ $2^{-8}$ $3.3059e-06$ $3.2206$ $3.2294e-06$ $3.2313$ $3.0933e-06$ $3.2813$ $2^{-9}$ $1.0265e-06$ $3.2206$ $1.0258e-06$ $3.1481$ $0.9983e-06$ $3.0986$ $2^{-10}$ $0.3531e-06$ $2.9071$ $0.3518e-06$ $2.9159$ $0.3426e-06$ $2.9139$ $2^{-11}$ $0.1560e-06$ $2.2635$ $0.1556e-06$ $2.2609$ $0.1515e-06$ $2.2614$
 step size $h$ $\theta=0.5$ $\theta=0.75$ $\theta=1$ $\epsilon(3)$ rate $\epsilon(3)$ rate $\epsilon(3)$ rate $2^{-6}$ $3.4673e-05$ $*$ $3.4000e-05$ $*$ $3.3598e-05$ $*$ $2^{-7}$ $1.0647e-05$ $3.2566$ $1.0435e-05$ $3.2583$ $1.0150e-05$ $3.3101$ $2^{-8}$ $3.3059e-06$ $3.2206$ $3.2294e-06$ $3.2313$ $3.0933e-06$ $3.2813$ $2^{-9}$ $1.0265e-06$ $3.2206$ $1.0258e-06$ $3.1481$ $0.9983e-06$ $3.0986$ $2^{-10}$ $0.3531e-06$ $2.9071$ $0.3518e-06$ $2.9159$ $0.3426e-06$ $2.9139$ $2^{-11}$ $0.1560e-06$ $2.2635$ $0.1556e-06$ $2.2609$ $0.1515e-06$ $2.2614$
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