| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4603757 | Linear Algebra and its Applications | 2006 | 6 Pages |
Abstract
For a given matrix A, a matrix P such that PA = A is said to be a local identity, and such that P2A = 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.
Related Topics
Physical Sciences and Engineering
Mathematics
Algebra and Number Theory
