Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: About matrix norms
Replies: 4   Last Post: Jan 23, 2013 11:59 AM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Matt J

Posts: 4,992
Registered: 11/28/09
Re: About matrix norms
Posted: Jan 23, 2013 11:59 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

"Martti" wrote in message <kdoaks$9mr$1@newscl01ah.mathworks.com>...
> > prod(diag(s)) is the same as
> > sqrt(det(A'*A)) or sqrt(det(A*A'))
> >
> > Bruno

>
> Thanks Bruno, that makes the computing much lighter! What about the name of that norm, or alternatives?


And since you're restricting attention to invertible (so presumably square) matrices, it simplifies even further,

sqrt(det(A*A')) = abs( det(A) )

Still not a norm, though, as Bruno mentioned.



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.