The similarity-degree conjecture for Fourier algebras
Let be a locally compact group. Write for the unit ball of the unitization of the Fourier algebra , let denote the algebra of continuous functions vanishing at infinity, and let be the completely bounded similarity degree of . Similarity-degree conjecture. For every locally compact group, one has
The claim gives a uniform upper bound on the completely bounded similarity degree of Fourier algebras and identifies the relevant unitized object with . The supplied text does not indicate whether this assertion is established or remains open.
References
Primary source
Hun Hee Lee, Ebrahim Samei and Nico Spronk, “Similarity degree of Fourier algebras”, arXiv:1511.03423 (2016).
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