Lgd.e.g.f.
Jon Awbrey
jawbrey at oakland.edu
Wed Oct 16 03:28:02 CEST 2002
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"logarithmic derivative" is pretty standard nomenclature,
e.g., in analytic number theory.
jon
Michael Somos wrote:
>
> Seqfan,
>
> > but I have no idea what "Lgd.e.g.f." is.
>
> Okay, I did have some clues after all, and after sending the
> original article I realized exactly what it is. It is the
> derivate of the log of the e.g.f. In other words, if A(x) is
> the e.g.f. then A'(x)/A(x) is the Lgd.e.g.f. and some very
> nice properties connect A(x) and A'(x)/A(x). There are likely
> several other examples of this which are not indicated in
> OEIS as yet. The first step might be to come up with a good
> name for this concept. Shalom, Michael
>
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