Two local operators and the BLUE

被引:1
作者
Kala, Radoslaw [1 ]
Pordzik, Pawel [1 ]
机构
[1] Agr Univ Poznan, Dept Math & Stat Methods, PL-60637 Poznan, Poland
关键词
local identity; local idempotent; oblique projector; symmetrizer; general Gauss-Markov model;
D O I
10.1016/j.laa.2005.10.021
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
For a given matrix A, a matrix P such that PA = A is said to be a local identity, and such that P(2)A = PA is said to be a local idempotent. In the paper, some simple properties of such operators are presented. Their relation to the best linear unbiased estimation in the general Gauss-Markov model is also demonstrated. (c) 2005 Elsevier Inc. All rights reserved.
引用
收藏
页码:134 / 139
页数:6
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