On lacunary sets for nonabelian groups. (English) Zbl 0381.43006
MSC:
43A40 | Character groups and dual objects |
43A15 | \(L^p\)-spaces and other function spaces on groups, semigroups, etc. |
43A30 | Fourier and Fourier-Stieltjes transforms on nonabelian groups and on semigroups, etc. |