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SIMAX
Paper

A QL procedure for computing the eigenvalues of complex symmetric tridiagonal matrices

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Abstract

We present a storage efficient procedure for computing all of the eigenvalues of a complex symmetric tridiagonal matrix. This procedure mimics the implicit QL procedure for computing all of the eigenvalues of a real symmetric tridiagonal matrix, modified by heuristics for monitoring and maintaining numerical stability. Numerical experiments demonstrate the capabilities of this procedure.

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SIMAX

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