arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2011.11179math.NAcs.NA
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时间尺度上非线性$q$ -分数微分方程的差分法

A difference method for solving the nonlinear $q$-factional differential equations on time scale

Tie Zhang

摘要:

分数阶微分方程描述的是加在时间尺度集合$q$上的物理过程。本文首先提出了一个差分公式,用于离散具有阶数$0<α<1$和标度指数$0<q<1$的时间尺度集合$T_q$上的分数阶$q$ -导数$^cD_q^αx(t)$.我们建立了严格的截断误差有界性,并证明了该差分公式是无条件稳定的。然后,我们考虑了在时间尺度集上求解$q$ -分数阶微分方程:$^cD_q^αx(t)=f(t,x(t))$初值问题的差分法。证明了差分解的唯一存在性和稳定性,并给出了收敛性分析。数值实验表明了所提出的差分法的有效性和高精度。

英文摘要:

The $q$-fractional differential equation usually describe the physics process imposed on the time scale set $T_q$. In this paper, we first propose a difference formula for discretizing the fractional $q$-derivative $^cD_q^αx(t)$ on the time scale set $T_q$ with order $0<α<1$ and scale index $0<q<1$. We establish a rigours truncation error boundness and prove that this difference formula is unconditionally stable. Then, we consider the difference method for solving the initial problem of $q$-fractional differential equation: $^cD_q^αx(t)=f(t,x(t))$ on the time scale set. We prove the unique existence and stability of the difference solution and give the convergence analysis. Numerical experiments show the effectiveness and high accuracy of the proposed difference method.

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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