Spectra of invariant uniform and transform algebras

I. Glicksberg
1983 Transactions of the American Mathematical Society  
For G a locally compact abelian group, any closed invariant proper subalgebra of CQ(G) has analytic discs in its spectrum. Related results are given for A(G) and B(G).
doi:10.1090/s0002-9947-1983-0690058-1 fatcat:lsdcfcx7pzfyjaleal3j2ygak4