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Part of the book series: Operator Theory: Advances and Applications ((OT,volume 42))

Abstract

µ(T) of an operator T acting on a linear topological space x is defined to be the least cardinal number of Y⊂x such that

$$ Span\left( {{T^n}y:n \geqslant 0} \right) = x $$
((1.1))

. Any Y satisfying (1.1) is called a cyclic set for T.

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N. K. Nikolskii

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Solomyak, B.M., Volberg, A.L. (1989). Multiplicity of Analytic Toeplitz Operators. In: Nikolskii, N.K. (eds) Toeplitz Operators and Spectral Function Theory. Operator Theory: Advances and Applications, vol 42. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-5587-7_3

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  • DOI: https://doi.org/10.1007/978-3-0348-5587-7_3

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