Hybrid Algorithm for Fast Toeplitz Orthogonalization.
Sanzheng Qiao (1988)
Numerische Mathematik
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Sanzheng Qiao (1988)
Numerische Mathematik
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D.R. Sweet (1990/91)
Numerische Mathematik
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A.W. Bojanczyk, R.P., de Hoog, F. de Brent (1986)
Numerische Mathematik
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J. Rissanen (1974)
Numerische Mathematik
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E.H. BAREISS (1969)
Numerische Mathematik
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G. Heinig, P. Jankowski, K. Rost (1987/88)
Numerische Mathematik
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Il'in, S.N. (2004)
Zapiski Nauchnykh Seminarov POMI
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Yufeng Lu, Linghui Kong (2014)
Studia Mathematica
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We first determine when the sum of products of Hankel and Toeplitz operators is equal to zero; then we characterize when the product of a Toeplitz operator and a Hankel operator is a compact perturbation of a Hankel operator or a Toeplitz operator and when it is a finite rank perturbation of a Toeplitz operator.
Elżbieta Król-Klimkowska, Marek Ptak (2016)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica
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The investigation of properties of generalized Toeplitz operators with respect to the pairs of doubly commuting contractions (the abstract analogue of classical two variable Toeplitz operators) is proceeded. We especially concentrate on the condition of existence such a non-zero operator. There are also presented conditions of analyticity of such an operator.
Albrecht Böttcher (1990)
Monatshefte für Mathematik
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Miroslav Engliš, Jari Taskinen (2007)
Studia Mathematica
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It is well known that one can often construct a star-product by expanding the product of two Toeplitz operators asymptotically into a series of other Toeplitz operators multiplied by increasing powers of the Planck constant h. This is the Berezin-Toeplitz quantization. We show that one can obtain in a similar way in fact any star-product which is equivalent to the Berezin-Toeplitz star-product, by using instead of Toeplitz operators other suitable mappings from compactly supported smooth...
Titus Hilberdink (2006)
Acta Arithmetica
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Tadeusz Rojek (1989)
Compositio Mathematica
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A.K. Abdikalykov, V.N. Chugunov, Kh.D. Ikramov (2015)
Special Matrices
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Our motivation was a paper of 1991 indicating three special unitary matrices that map Hermitian Toeplitz matrices by similarity into real Toeplitz-plus-Hankel matrices. Generalizing this result, we give a complete description of unitary similarity automorphisms of the space of Toeplitz-plus-Hankel matrices.