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The definition needs to be clarified. Why is the (4,1) entry of the example equal to 1, when the definition given here gives 5? --Zero 04:47, 20 Oct 2004 (UTC)
- I corrected that. But yeah, I agree that the article in general needs clarification; unfortunately, outside of the article in Spektrum der Wissenschaft (the german edition of Scientific American), I have not been able to find anything on the topic really. The papers mentioned are not on arXiv, and Google finds no pages that would shed further light on this subject, either. -- Schnee 14:54, 20 Oct 2004 (UTC)
MO comment
edit[1] is interesting and maybe someone here can add something about it. 67.119.15.96 (talk) 10:29, 8 May 2011 (UTC)