What is A\A? - Cleve Moler on Mathematics and Computing

[poster]

The answer: A\A is always I, except when it isn't.

ContentsWhy A\A ?Mono-elemental matricesNonsingular matricesMono-elemental againRank deficient matricesLots of NaNsMagic squaresOddSingly evenDoubly evenPseudoinverseMy Bottom LineWhy A\A ?I have been explaining our backslash operator for almost 50 years, but I



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