Bands of λ-simple semigroups
Stojan Bogdanović, Žarko Popović, Miroslav Ćirić · Filomat · 2010
Semigroups having a decomposition into a band of semigroups have been studied in many papers. In the present paper we give characterizations of various special types of bands of ?-semigroups and semilattices of matrices of ?- semigroups.