Generalized discrete Lotka-Volterra equation, orthogonal polynomials and generalized epsilon algorithm
Generalized discrete Lotka-Volterra equation, orthogonal polynomials and generalized epsilon algorithm
复制标题
广义离散 Lotka-Volterra 方程、正交多项式和广义 epsilon 算法
DOI:
10.1007/s11075-022-01365-0
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发表时间:
2022-07
影响因子:
2.1
通讯作者:
Xing-Biao Hu
中科院分区:
文献类型:
--
作者:
Xiao-Min Chen;Xiang-Ke Chang;Yi He;Xing-Biao Hu
In this paper, we propose a generalized discrete Lotka-Volterra equation and explore its connections with symmetric orthogonal polynomials, Hankel determinants and convergence acceleration algorithms. Firstly, we extend the fully discrete Lotka-Volterra equation to a generalized one with a sequence of given constantsand derive its solution in terms of Hankel determinants. Then, it is shown that the discrete equation of motion is transformed into a discrete Riccati system for a discrete Stieltjes function, hence leading to a complete linearization. Besides, we obtain its Lax pair in terms of symmetric orthogonal polynomials by generalizing the Christoffel transformation for the symmetric orthogonal polynomials. Moreover, a generalization of the famous Wynn’sε-algorithm is also derived via a Miura transformation to the generalized discrete Lotka-Volterra equation. Finally, the numerical effects of this generalizedε-algorithm are discussed by applying to some linearly, logarithmically convergent sequences and some divergent series.
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