AX=b vs Ax=b
This explains so much.
Henry Smith was a mathematician of the 19th century who worked mainly in number theory. He especially did important work on the representation of numbers by various quadratic forms. We have discussed how even in something seemingly settled, like Joseph Lagrange’s theorem that every natural number is representable as a sum of four squares, new questions are always around—especially when one considers complexity.
Today Ken and I want to discuss a private slip of forgetfulness, and how often others may have done the same.
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