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st: re: a question on looping


From   Kit Baum <baum@bc.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: re: a question on looping
Date   Tue, 18 Sep 2007 18:56:18 -0400

Asgar said
On using " matrix symeigen" command you are correct. I had a typo
mistake and i meant what you meant. I need only check with you on the
basic definition of a symmetric matrix. A symmetric matrix ,by
definition, is a quadratic matrix that its off-diagonal element are the
same but its diagonal elements can be equal o

Correct, a symmetric matrix can be reflected around the main diagonal. Please note that package 'geneigen' will deal with a real square matrix, whether or not symmetric, and it works in Stata 7.0 up. As Nick notes, in Stata 9 or 10, Stata can do this itself.

ssc desc geneigen

to install.

Kit

Kit Baum, Boston College Economics and DIW Berlin
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html

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