Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4599721 | Linear Algebra and its Applications | 2014 | 8 Pages |
Abstract
A ray pattern (matrix) is a matrix each of whose entries is either 0 or a ray in the complex plane of the form {reiθ:r>0}{reiθ:r>0}. A ray pattern A is said to be powerful if AkAk is unambiguously defined for all positive integers k. If A is powerful and Al=Al+pAl=Al+p for some positive integers l and p, then we say A is periodic. In this paper, we characterize periodic, reducible, powerful ray pattern matrices and obtain new results on the powers of powerful or nonpowerful ray patterns.
Related Topics
Physical Sciences and Engineering
Mathematics
Algebra and Number Theory
Authors
Ling Zhang, Zhongshan Li, Ting-Zhu Huang, Qing-Fang Zhu, Jian Hua, Lihua Zhang,