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Spectral convergence for a general class of random matrices

Authors: Rodríguez Rubio, Francisco; Mestre, Xavier;

Spectral convergence for a general class of random matrices

Abstract

Let X be an M N complex random matrix with i.i.d. entries having mean zero and variance 1=N and consider the class of matrices of the type B = A + R1=2XTXHR1=2 , where A, R and T are Hermitian nonnegative deÖnite matrices, such that R and T have bounded spectral norm with T being diagonal, and R1=2 is the nonnegative deÖnite square-root of R. Under some assumptions on the moments of the entries of X, it is proved in this paper that, for any matrix with bounded trace norm and for each complex z outside the positive real line, Tr h (B zIM) 1 i M (z) ! 0 almost surely as M; N ! 1 at the same rate, where M (z) is deterministic and solely depends on ; A; R and T. The previous result can be particularized to the study of the limiting behavior of the Stieltjes transform as well as the eigenvectors of the random matrix model B. The study is motivated by applications in the Öeld of statistical signal processi

Country
Spain
Keywords

[SDV.BIBS] Life Sciences [q-bio]/Quantitative Methods [q-bio.QM], Random matrices (algebraic aspects), multivariate statistics, Sample covariance matrix, Analysis of variance and covariance (ANOVA), random matrix, Stieljes transform, Separable covariance model, Multivariate statistics, separable covariance model, Random matrix theory, Random matrices (probabilistic aspects), sample covariance matrix, Stieltjes transform, signal processing, [INFO.INFO-BI] Computer Science [cs]/Bioinformatics [q-bio.QM]

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
30
Top 10%
Top 10%
Top 10%
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