Bernstein-Szegö Measures on the Two Dimensional Torus
Bernstein-Szegö Measures on the Two Dimensional Torus
复制标题
二维圆环上的 Bernstein-Szegö 测量
DOI:
10.1512/iumj.2008.57.3226
复制
发表时间:
2007
影响因子:
1.1
通讯作者:
Greg Knese
中科院分区:
文献类型:
--
作者:
Greg Knese
We present a new viewpoint (namely, reproducing kernels) and new proofs for several recent results of J. Geronimo and H. Woerdeman on orthogonal polynomials on the two dimensional torus (and related subjects). In addition, we show how their results give a new proof of Ando's inequality via an equivalent version proven by Cole and Wermer. A major theme is the use of so-called Bernstein-Szego measures. A simple necessary and sufficient condition for two variable polynomial stability is also given.