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for questions about sequences and series, e.g. convergence, closed form expressions, etc. Note that there is a different tag for spectral sequences, and also note that MathOverflow is not for homework. Please consider consulting the online encyclopedia for integer sequences, if you are trying to identify a given sequence that you have found in your research.

3 votes
2 answers
391 views

Is this infinite series related to some well-known special functions?

Please allow me to resort once again to the expertise of the MathOverflow community : During research I encoutered the following infinite series : $$\sum_{n=-\infty}^{+\infty} \frac{u^{2n}}{1+\rho^{ …
Malik Younsi's user avatar
  • 2,154
8 votes

Which sequences can be extended to analytic functions? (e. g., Ackermann's function)

Actually, there is an even stronger result, often called the interpolation theorem, which follows from a well-known theorem of Mittag-Leffler: Let $(z_n)$ be a sequence of complex numbers with no lim …
Malik Younsi's user avatar
  • 2,154