On 05/02/2012 04:47 PM, Steven_Lord wrote:
Russ, you and the OP (and others) may be interested in one of the books that Cleve Moler has written and made freely available on the MathWorks website: http://www.mathworks.com/moler/ The chapter Linear Equations in "Numerical Computing with MATLAB" includes a section (section 2.9, starting on page 14 if I remember correctly) that discusses norm and condition number and gives a more formal statement of what you described. The code included in the book is written in MATLAB, but even if you don't use MATLAB (since I know this has been cross-posted to comp.lang.python) there's plenty of good, crunchy mathematics in that section.
I use matlab more than python. I just want to learn python, which seems extremely powerful and easy but yet, I'm a python beginner.
Thank you very much for the reference, Mr. Lord. I'll look closely at that Moler-book, in about 1/2 hour or so.... Looking forward to learning more about this...
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