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for questions involving inequalities, upper and lower bounds.

2 votes
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Has the function $F_s(x)=\sum_{k=0}^{\infty}\frac{x^k}{\Gamma(k+1)^s}$ been studied before?

Carlo identified it as the normalization constant of the Conway-Maxwell-Poisson distribution (see e.g. Wikipedia. The first to study this function seems to be É. Le Roy: Valeurs asymptotiques de cert …
Felix Kastner's user avatar
2 votes
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Has the function $F_s(x)=\sum_{k=0}^{\infty}\frac{x^k}{\Gamma(k+1)^s}$ been studied before?

While studying an application of Grönwall's inequality I found that the function $$ F_s(x)=\sum_{k=0}^{\infty}\frac{x^k}{\Gamma(k+1)^s} $$ for $s\geq0$ in some cases provides a sharper bound. I had a …
Felix Kastner's user avatar