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On unitarily transposable matrices

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Abstract

Matrices A ∈ Mn(C) such that

$$A^T = Q^* AQ$$
(1)

for a certain unitary matrix Q are examined. Several classes of matrices possessing this property are indicated. Under certain assumptions on A, two conditions necessary for (1) to hold are provided. Bibliography: 6 titles.

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References

  1. R. A. Horn and C. R. Johnson, Matrix Analysis, Cambridge University Press, Cambridge (1985).

    MATH  Google Scholar 

  2. Kh. D. Ikramov, “On the unitary similarity between mutually transposed matrices,” Dokl. Ross. Akad. Nauk, 378, No. 5, 592–593 (2001).

    MathSciNet  Google Scholar 

  3. C. Pearcy, “A complete set of unitary invariants for operators generation finite W*-algebras of type I,” Pacific J. Math., 12, 1405–1416 (1962).

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  4. Kh. D. Ikramov, “The canonical Schur form of a unitarily quasidiagonalizable matrix,” Zh. Vychisl. Mat. Fiz., 37, 1411–1415 (1997).

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  5. Kh. D. Ikramov, “On a quasidiagonalizability criterion for real matrices,” Zh. Vychisl. Mat. Mat. Fiz., 40, 6–20 (2000).

    MathSciNet  Google Scholar 

  6. J. Vermeer, “Examples concerning orthogonal (unitary) similarity of matrices,” Linear Algebra Appl., 428, 382–392 (2008).

    Article  MATH  MathSciNet  Google Scholar 

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Correspondence to Kh. D. Ikramov.

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Translated from Zapiski Nauchnykh Seminarov POMI, Vol. 346, 2007, pp. 39–48.

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Ikramov, K.D. On unitarily transposable matrices. J Math Sci 150, 1937–1942 (2008). https://doi.org/10.1007/s10958-008-0108-y

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  • DOI: https://doi.org/10.1007/s10958-008-0108-y

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