[Scipy-tickets] [SciPy] #1587: Documention of scipy.sparse.linalg.eigsh does not match ARPACK for generalized eigenvalue problem

SciPy Trac scipy-tickets@scipy....
Fri Jan 20 08:16:36 CST 2012


#1587: Documention of scipy.sparse.linalg.eigsh does not match ARPACK for
generalized eigenvalue problem
----------------------------+-----------------------------------------------
 Reporter:  antoine.levitt  |       Owner:  somebody   
     Type:  defect          |      Status:  new        
 Priority:  normal          |   Milestone:  Unscheduled
Component:  Other           |     Version:  0.10.0     
 Keywords:                  |  
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 Hi,

 http://docs.scipy.org/doc/scipy/reference/generated/scipy.sparse.linalg.eigsh.html
 states that A and B must be symmetric. ARPACK
 (http://www.caam.rice.edu/software/ARPACK/UG/node136.html#SECTION001210000000000000000)
 states that A'B must equal BA, and that A does not need to be symmetric.
 Am I missing something?

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Ticket URL: <http://projects.scipy.org/scipy/ticket/1587>
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