Abstract
This is a survey of recent results on free semigroup algebras, which are the WOT-closed algebras generated by n isometries with pairwise orthogonal ranges.
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Davidson, K.R. (2001). Free Semigroup Algebras A Survey. In: Borichev, A.A., Nikolski, N.K. (eds) Systems, Approximation, Singular Integral Operators, and Related Topics. Operator Theory: Advances and Applications, vol 129. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-8362-7_9
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