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Oh, I get it. "Fermat's library," because we're writing on the margin, which, for once, is large enough to contain our marginalia. Cute. Btw, this is the same
by jordigh 11y ago
Oh, I get it. "Fermat's library," because we're writing on the margin, which, for once, is large enough to contain our marginalia.
Cute.
Btw, this is the same proof that is in Spivak's Calculus, but Niven explains it a little less than Spivak does.
- semi-extrinsic 11y agoSince the linked proof was published in a mathematical journal [Bull. Amer. Math. Soc. Volume 53, Number 6 (1947), 509], I think it's safe to assume that Niven was first.