Simple Matrix class

[Robert Kern]

Paul McGuire wrote:
> I've posted a simple Matrix class on my website as a small-footprint
> package for doing basic calculations on matrices up to about 10x10 in
> size (no theoretical limit, but performance on inverse is exponential).

Why is that? A simple and robust LU decomposition should be no more than O(n**3).

-- 
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