Mathematica 9 is now available
Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2006
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*November
*December
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2006

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

Search the Archive

Eigensystem[] for higher dimensions?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg68472] Eigensystem[] for higher dimensions?
  • From: AES <siegman at stanford.edu>
  • Date: Sun, 6 Aug 2006 02:57:13 -0400 (EDT)
  • Organization: Stanford University
  • Sender: owner-wri-mathgroup at wolfram.com

Can the matrix m in Eigensystem[m] be greater than two dimensional?

And the eigenvectors v correspondingly greater than one dimensional?

The problem of interest is finding the eigenvalues lambda and 
eigenarrays A of the equation

   M A = lambda A

with A being a (physically nonseparable) two dimensional array and M a 
specified four dimensional array.  I can of course use appropriate 
indexing to convert these to one and two dimensional quantities, but the 
index transformations can be a pain; the reverse index transformations 
even more ugly; the Mathematica Book doesn't seem to explicitly answer 
the question -- and it's easier to ask it here, and maybe also get some 
useful pointers, than futz around with experiments.


  • Prev by Date: Minimize
  • Next by Date: Re: returning a variable's name, rather than the variable's contents
  • Previous by thread: Re: Minimize
  • Next by thread: Re: How to do Chebyshev expansion in Mathematica?