[Date Index] [Thread Index] [Author Index]

Re: vector multiplication

• To: mathgroup at smc.vnet.net
• Subject: [mg25550] Re: [mg25505] vector multiplication
• From: Rob Pratt <rpratt at email.unc.edu>
• Date: Sat, 7 Oct 2000 03:35:54 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

If you really want only the diagonal elements, just note that they will be
v1^2, v2^2, ..., vk^2, which you can get by entering v^2.

Rob Pratt
Department of Operations Research
The University of North Carolina at Chapel Hill

rpratt at email.unc.edu

http://www.unc.edu/~rpratt/

On Thu, 5 Oct 2000 Yannis.Paraskevopoulos at ubsw.com wrote:

> Hi there,
> 
> Could you please help me with the following:
> 
> Assume the v is a vector (1xk). I would like to calculate the v'v and 
> then take all the diagonal elements. 
> 
> Thanks a lot in advance for your effort.
> 
> yannis
> 
> 
> Visit our website at http://www.ubswarburg.com
> 
> This message contains confidential information and is intended only 
> for the individual named.  If you are not the named addressee you 
> should not disseminate, distribute or copy this e-mail.  Please 
> notify the sender immediately by e-mail if you have received this 
> e-mail by mistake and delete this e-mail from your system.
> 
> E-mail transmission cannot be guaranteed to be secure or error-free 
> as information could be intercepted, corrupted, lost, destroyed, 
> arrive late or incomplete, or contain viruses.  The sender therefore 
> does not accept liability for any errors or omissions in the contents 
> of this message which arise as a result of e-mail transmission.  If 
> verification is required please request a hard-copy version.  This 
> message is provided for informational purposes and should not be 
> construed as a solicitation or offer to buy or sell any securities or 
> related financial instruments.
> 
> 
>