首页> 外文期刊>Journal of Integer Sequences >Extension of a Theorem of Duffin and Schaeffer
【24h】

Extension of a Theorem of Duffin and Schaeffer

机译:Duffin和Schaeffer定理的扩展

获取原文
           

摘要

Let r1,..., rs: Zn≥0 → C be linearly recurrent sequences whose associated eigenvalues have arguments in πQ and let F(z) := Σn ≥ 0 f(n)zn, where f(n) ∈ {r1(n),..., rs(n)} for each n ≥ 0. We prove that if F(z) is bounded in a sector of its disk of convergence, then it is a rational function. This extends a very recent result of Tang and Wang, who gave the analogous result when the sequence f(n) takes on values of finitely many polynomials.
机译:令r1,...,rs:Zn≥0→C为线性递归序列,其相关特征值在πQ中具有自变量,并令F(z):=Σn≥0 f(n)zn,其中f(n)∈{r1 (n),...,rs(n)}对于每个n≥0。我们证明,如果F(z)限制在其收敛盘的一个扇区中,则它是一个有理函数。这扩展了Tang和Wang的最新结果,当序列f(n)取有限个多项式的值时,Tang和Wang给出了类似的结果。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号