The paper proves surjectivity of restriction maps from Fourier and Fourier-Stieltjes algebras of locally compact groupoids to isotropy subgroups, and derives non-amenability conditions from them.
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On the restriction maps of the Fourier and Fourier-Stieltjes algebras over locally compact groupoids
The paper proves surjectivity of restriction maps from Fourier and Fourier-Stieltjes algebras of locally compact groupoids to isotropy subgroups, and derives non-amenability conditions from them.