TY - JOUR AU - B. M. Shain TI - Semigroups for which every transitive representation by functions is a~representation by invertible functions JO - Izvestiâ vysših učebnyh zavedenij. Matematika PY - 1973 SP - 112 EP - 121 IS - 7 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IVM_1973_7_a13/ LA - ru ID - IVM_1973_7_a13 ER -