English

Sign intermixing for Riesz bases and frames measured in the Kantorovich-Rubinstein norm

Classical Analysis and ODEs 2021-03-22 v3

Abstract

We measure a sign interlacing phenomenon for Bessel sequences (uk) (u_{k}) in L2 L^{2} spaces in terms of the Kantorovich--Rubinstein mass moving norm ukKR \Vert u_{k}\Vert_{KR}. Our main observation shows that, quantitatively, the rate of the decreasing ukKR0 \Vert u_{k}\Vert_{KR}\longrightarrow 0 havily depends on S. Bernstein n n-widths of a compact of Lipschitz functions. In particular, it depends on the dimension of the measure space. We have sharp results on the worst and the best rate of convergence of Kantorovich--Rubinstein norms of frames on dd-dimensional cube. Those rates are sharp.

Keywords

Cite

@article{arxiv.2011.09411,
  title  = {Sign intermixing for Riesz bases and frames measured in the Kantorovich-Rubinstein norm},
  author = {Nikolai Nikolski and Alexander Volberg},
  journal= {arXiv preprint arXiv:2011.09411},
  year   = {2021}
}

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20 pages