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

Yin-Hei Cheng, Brian E. Forrest, Nico Spronk

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 $a_0(G)$ i…