@article {15776,
title = {On bounds for scaled projections and pseudoinverses},
journal = {Linear Algebra and its Applications},
volume = {132},
year = {1990},
month = {1990/04/15/},
pages = {115 - 117},
abstract = {Let X be a matrix of full column rank, and let D be a positive definite diagonal matrix. In a recent paper, Stewart considered the weighted pseudoinverse X{\textdagger}D = (XTDX)-1XTD and the associated oblique projection PD = XX{\textdagger}D, and gave bounds, independent of D, for the norms of these matrices. In this note, we answer a question he raised by showing that the bounds are computable.},
isbn = {0024-3795},
doi = {10.1016/0024-3795(90)90056-I},
url = {http://www.sciencedirect.com/science/article/pii/002437959090056I},
author = {O{\textquoteright}Leary, Dianne P.}
}