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Doklady Rossijskoj Akademii Nauk. Mathematika, Informatika, Processy Upravlenia, 2021, Volume 501, Pages 22–25
DOI: https://doi.org/10.31857/S2686954321060060
(Mi danma216)
 

MATHEMATICS

Local Marchenko–Pastur law for sparse rectangular random matrices

F. Götzea, D. A. Timushevb, A. N. Tikhomirovb

a Bielefeld University, Bielefeld, Germany
b Komi Scientific Center of Ural Branch of RAS, Syktyvkar, Russia
References:
Abstract: We consider sparse sample covariance matrices with sparsity probability $p_n\ge c_0\log^{\frac2\kappa}n/n$ with $\kappa>0$. Assuming that the distribution of matrix elements has a finite absolute moment of order $4+\delta$, $\delta>0$, it is shown that the distance between the Stieltjes transforms of the empirical spectral distribution function and the Marchenko–Pastur law is of order $\log n(1/(nv)+1/(np_n))$, где where $v$ is the distance to the real axis in the complex plane.
Keywords: local Marchenko–Pastur law, local regime, sparse random matrices, spectrum of a random matrix, Stieltjes transform.
Presented: I. A. Ibragimov
Received: 09.09.2021
Revised: 09.09.2021
Accepted: 27.10.2021
English version:
Doklady Mathematics, 2021, Volume 104, Issue 3, Pages 332–335
DOI: https://doi.org/10.1134/S1064562421060065
Bibliographic databases:
Document Type: Article
UDC: 519.2
Language: Russian
Citation: F. Götze, D. A. Timushev, A. N. Tikhomirov, “Local Marchenko–Pastur law for sparse rectangular random matrices”, Dokl. RAN. Math. Inf. Proc. Upr., 501 (2021), 22–25; Dokl. Math., 104:3 (2021), 332–335
Citation in format AMSBIB
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\paper Local Marchenko--Pastur law for sparse rectangular random matrices
\jour Dokl. RAN. Math. Inf. Proc. Upr.
\yr 2021
\vol 501
\pages 22--25
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\crossref{https://doi.org/10.31857/S2686954321060060}
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\transl
\jour Dokl. Math.
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\vol 104
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\pages 332--335
\crossref{https://doi.org/10.1134/S1064562421060065}
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