Journal of Approximation Theory ( IF 0.9 ) Pub Date : 2020-11-02 , DOI: 10.1016/j.jat.2020.105506 D.R. Yafaev
Our goal is to find an asymptotic behavior as of the orthogonal polynomials defined by Jacobi recurrence coefficients (off-diagonal terms) and (diagonal terms). We consider the case , in such a way that (that is, the Carleman condition is violated) and as . In the case asymptotic formulas for are known; they depend crucially on the sign of . We study the critical case . The formulas obtained are qualitatively different in the cases and . Another goal of the paper is to advocate an approach to a study of asymptotic behavior of based on a close analogy of the Jacobi difference equations and differential equations of Schrödinger type.
中文翻译:
正交多项式的渐近行为。紧急情况
我们的目标是找到一个渐近行为 正交多项式的 由Jacobi递归系数定义 (非对角项)和 (对角术语)。我们考虑情况, 以这种方式 (即违反了Carleman条件)并且 如 。在这种情况下 的渐近公式 众所周知 他们严重依赖于。我们研究关键情况。在某些情况下,获得的公式在质上有所不同 和 。本文的另一个目标是提倡一种研究神经元渐近行为的方法。 基于Jacobi差分方程和Schrödinger型微分方程的紧密类比。