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Muzi
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Zeros of functions of the form $F(z) = \int_I g(t-z) \, d\mu(t)$ with $g$ entire and $I$ a compact interval

Let $I \subset \mathbb R$ be a compact interval, $\mu$ is a complex regular Borel measure on $I$ and $g : \mathbb C \to \mathbb C$ an entire function. Define an entire function $F : \mathbb C \to \mathbb C$ via $$ F(z) = \int_I g(t-z) \, d\mu(t). $$ I'm interested in the zero set of such functions $F$, in particular in the question if one can make certain assumptions on $g$ so that a discrete set of the form $\mathbb Z$ (or similar sets) constitute a uniqueness set for $F$, i.e. $F(\mathbb Z) = 0 \implies F=0 $.

For instance, one could assume that $g$ is a function exponential type with certain integrability assumptions and then use Shannon's sampling theorem. I'm searching for more general assumptions.

I was wondering if someone of you came across such problems or knows papers/studies about it. Thanks in advance!

Muzi
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  • 1
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