Abstract
The first explicit example of a positive semidefinite double sequence which is not a moment sequence was given by Friedrich. We present an example with a simpler definition and more moderate growth as (m, n) → ∞.
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Bisgaard, T.M. An Example of a Positive Semidefinite Double Sequence Which is Not a Moment Sequence. Czechoslovak Mathematical Journal 54, 273–277 (2004). https://doi.org/10.1023/B:CMAJ.0000042367.37116.14
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DOI: https://doi.org/10.1023/B:CMAJ.0000042367.37116.14