Matrix extensions and eigenvalue completions, the generic case

Helton, William; Rosenthal, Joachim; Wang, Xiaochang

doi:10.1090/S0002-9947-97-01975-2

Matrix extensions and eigenvalue completions, the generic case
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by William Helton, Joachim Rosenthal and Xiaochang Wang PDF

Trans. Amer. Math. Soc. 349 (1997), 3401-3408 Request permission

Abstract:

In this paper we provide new necessary and sufficient conditions for the so-called eigenvalue completion problem.

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