[SciPy-dev] Matrix exponential

[Robert Kern]

On Fri, Feb 27, 2009 at 15:52,  <jason-sage at creativetrax.com> wrote:
> John Cremona posted the following message to the sage development list
> about matrix exponentials.  I'm copying it to here since it asks about
> the scipy matrix exponential method (we say numpy below, but we really
> mean scipy...)
>
> John Cremona wrote:
>
>> >> I have just been to a colloquium talk by numerical analyst Nick Higham
>> >> (Manchester) called "How to compute and not to compute a matrix
>> >> exponential".  He has new methods which are now in mathematica, matlab
>> >> and NAG but (apparantly) nowhere else.

Are the good methods in this paper?

A New Scaling and Squaring Algorithm for the Matrix Exponential (with
Awad Al-Mohy), MIMS EPrint 2009.9, January 2009. [new]

http://eprints.ma.man.ac.uk/1217/01/covered/MIMS_ep2009_9.pdf

-- 
Robert Kern

"I have come to believe that the whole world is an enigma, a harmless
enigma that is made terrible by our own mad attempt to interpret it as
though it had an underlying truth."
  -- Umberto Eco