On the norm and eigenvalue distribution of large random matrices

Citation
Ab. De Monvel et A. Khorunzhy, On the norm and eigenvalue distribution of large random matrices, ANN PROBAB, 27(2), 1999, pp. 913-944
Citations number
32
Categorie Soggetti
Mathematics
Journal title
ANNALS OF PROBABILITY
ISSN journal
00911798 → ACNP
Volume
27
Issue
2
Year of publication
1999
Pages
913 - 944
Database
ISI
SICI code
0091-1798(199904)27:2<913:OTNAED>2.0.ZU;2-I
Abstract
We study the eigenvalue distribution of NxN symmetric random matrices H-N(x , y) = N(-1/2)h(x, y), x, y = 1,..., N, where h(x, y), x less than or equal to y are Gaussian weakly dependent random variables. We prove that the nor malized eigenvalue counting function of H-N converges with probability 1 to a nonrandom function mu(lambda) as N --> infinity. We derive an equation f or the Stieltjes transform of the measure d mu(lambda) and show that the la tter has a compact support Lambda(mu). We find the upper bound for lim sup( N-->infinity)parallel to H(N)parallel to and study asymptotically the case when there are no eigenvalues of H-N outside of Lambda(mu) when N --> infin ity.