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arXiv · 1208.1519

On the subalgebra of a Fourier-Steiltjes algebra generated by pure positive definite functions

Yin-Hei Cheng·Brian E. Forrest·Nico Spronk
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Abstract

For a locally compact group $G$, the first-named author considered the closed subspace $a_0(G)$ which is generated by the pure positive definite functions. In many cases $a_0(G)$ is itself an algebra. We illustrate using Heisenburg groups and the $2\times 2$ real special linear group, that this is not the case in general. We examine the structures of the algebras thereby created and examine properties related to amenability.

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Yin-Hei Cheng, Brian E. Forrest, Nico Spronk. 2012-08-10. On the subalgebra of a Fourier-Steiltjes algebra generated by pure positive definite functions. https://arxiv.org/abs/1208.1519

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