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{\bf Oliver T. Dasbach}
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{\bf A Natural Series for the Natural Logarithm}
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Rodriguez Villegas expressed the Mahler measure of a polynomial in
terms of an infinite series.  L\"uck's combinatorial $L^2$-torsion
leads to similar series expressions for the Gromov norm of a knot
complement.

In this note we show that those formulae yield interesting power
series expansions for the logarithm function. This generalizes an
infinite series of Lehmer for the natural logarithm of $4$.

\bye

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