Let $f$ be holomorphic at $z_0$, and therefore agrees with its Taylor series in a neighbourhood around $z_0$, $$f(z)=\sum_{n=0}^\infty \frac{f^{(n)}(z_0)}{n!}(z-z_0)^n. $$ Is there an (integral) transform $\tilde f$ of $f$, with the property that $$\tilde f(z)=\sum_{n=0}^\infty \frac{f^{(n)}(z_0)}{n!(n+1)!}(z-z_0)^n?$$ In other words, is there an analytic relationship between a holomorphic function with derivatives $f^{(n)}$ and one with derivatives $f^{(n)}/(n+1)!$? I am aware of the Borel transform, which would give a relation for an additional $n!$ inserted rather than $(n+1)!$.
2026-03-26 17:52:54.1774547574
Analogue of Borel transform for holomorphic functions
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