Criteria for unitary congruence of complex \(2 \times 2\) matrices

DOI10.1134/S0001434610070217zbMath1231.15014OpenAlexW2019924691MaRDI QIDQ650275

Khakim D. Ikramov

Publication date: 25 November 2011

Published in: Mathematical Notes (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1134/s0001434610070217

zbMATH Keywords

canonical formscomplex eigenvaluessingular valueJordan blockcosquareSchur formSpecht's criterionunitary similarity transformationunitary congruence transformation

Mathematics Subject Classification ID

Eigenvalues, singular values, and eigenvectors (15A18) Canonical forms, reductions, classification (15A21)

Related Items (1)

OPUC, CMV matrices and perturbations of measures supported on the unit circle

Cites Work

• A complete set of unitary invariants for operators generating finite \(W^ *\)-algebras of type I
• Matrix Analysis
• A characterization of unitary congruence

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