Re: vector multiplication
- To: mathgroup at smc.vnet.net
- Subject: [mg25536] Re: [mg25505] vector multiplication
- From: "Mark Harder" <harderm at ucs.orst.edu>
- Date: Sat, 7 Oct 2000 03:35:40 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Yannis, This is what Outer[f,{},{}] is for: In[195]:= list1 = {u, v, w}; list2 = {x, y, z}; matrx = Outer[Times, list1, list2] diag = Table[matrx[[i, i]], {i, 3} ] Out[197]= {{u x, u y, u z},{v x, v y, v z},{w x, w y, w z}} Out[198]= {u x, v y, w z} ...in this case, I used f=Times[] to get the outer product of two lists. -mark harder -----Original Message----- From: Yannis.Paraskevopoulos at ubsw.com <Yannis.Paraskevopoulos at ubsw.com> To: mathgroup at smc.vnet.net Subject: [mg25536] [mg25505] vector multiplication >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. > > >