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- W2944615255 abstract "In a paper from 2016 D. R. Yafaev considers Hankel operators associated with Hamburger moment sequences q_n and claims that the corresponding Hankel form is closable if and only if the moment sequence tends to 0. The claim is not correct, since we prove closability for any indeterminate moment sequence but also for certain determinate moment sequences corresponding to measures with finite index of determinacy. It is also established that Yafaev's result holds if the moments satisfy root{2n}of{q_{2n}}=o(n)." @default.
- W2944615255 created "2019-05-16" @default.
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- W2944615255 date "2019-05-08" @default.
- W2944615255 modified "2023-09-27" @default.
- W2944615255 title "Closable Hankel operators and moment problems" @default.
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