Robert F. Gordon, Edward A. MacNair, et al.
WSC 1985
Paper
Circular discs containing eigenvalues of normal matrices
Abstract
We give an inclusion theorem for the eigenvalues of a normal matrix using discs similar to the Gerschgorin discs. This theorem is used to obtain bounds on the eigenvalues of Jordan products, and a variant of Kantorovich's inequality for normal matrices. © 1989.
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