Lit: f(x)=log(x) iff x is integer
#1
You may like the article of Ed Sandifer about a series, which interpolates the logarithm at integers, but not at non-integers. The form of the series has also some in common with the series for U(x) = exp(x)-1 by my eigensystem-decomposition, so there may be some additional interest.

See Sandifer_HowEulerDidIt_dec2007

Have fun -

Gottfried
Gottfried Helms, Kassel
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Lit: f(x)=log(x) iff x is integer - by Gottfried - 01/27/2008, 02:21 AM

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