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has been cited by the following article:

• TITLE: Bounds for the Second Largest Eigenvalue of Real 3 × 3 Symmetric Matrices with Entries Symmetric about the Origin

  AUTHORS: Barini Geoffrey, Kivunge Benard, Jotham Akanga

  KEYWORDS: Bounds; Determinant; Eigenvalues; Trace

  JOURNAL NAME: Applied Mathematics, Vol.3 No.6, June 26, 2012

  ABSTRACT: Let ASn[a,b] denote a set of all real nxn symmetric matrices with entries in the interval [a,b]. In this article, we present bounds for the second largest eigenvalue λ2(A) of a real symmetric matrix A, such that A∈AS3 [-b,b].