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The DOI matches its Crossref record; 14 of the 14 references it cites were found in a registry or an index.

Eigenvalues and Condition Numbers of Random Matrices

Open access
Edelman, Alan·1988·SIAM Journal on Matrix Analysis and Applications

Abstract

Given a random matrix, what condition number should be expected? This paper presents a proof that for real or complex $n \times n$ matrices with elements from a standard normal distribution, the expected value of the log of the 2-norm condition number is asymptotic to $\log n$ as $n \to \infty$. In fact, it is roughly $\log n + 1.537$ for real matrices and $\log n + 0.982$ for complex matrices as $n \to \infty$. The paper discusses how the distributions of the condition numbers behave for large n for real or complex and square or rectangular matrices. The exact distributions of the condition numbers of $2 \times n$ matrices are also given. Intimately related to this problem is the distribution of the eigenvalues of Wishart matrices. This paper studies in depth the largest and smallest eigenvalues, giving exact distributions in some cases. It also describes the behavior of all the eigenvalues, giving an exact formula for the expected characteristic polynomial.

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Metadata

Authors
Edelman, A.
Venue
SIAM Journal on Matrix Analysis and Applications
Published
1988-10
Volume
9
Issue
4
Pages
543-560
ISSN
  • 0895-4798 (ISSN-L)
  • 1095-7162
OpenAlex
W1974755392
Cited by
1,284
References
14
FWCI
3.95
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Eigenvalues and Condition Numbers of Random Matrices. https://app.cochat.ai/papers/10.1137/0609045
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Edelman, A. (1988). Eigenvalues and Condition Numbers of Random Matrices. SIAM Journal on Matrix Analysis and Applications. https://doi.org/10.1137/0609045

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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