01041nam a2200313 i 450099100102757970753620020507181906.0960920s1973 us ||| | eng 0675090628b10790974-39ule_instLE01305940ExLDip.to Matematicaeng512.2AMS 20-01AMS 20-XXPetrich, Mario58119Introduction to semigroups /Mario PetrichColumbus, Ohio :Merrill,c1973viii, 198 p. ;24 cm.Merrill research and lecture seriesBibliography: p. 183-194SemigroupsTheory of groups-textbooks.b1079097423-02-1728-06-02991001027579707536LE013 20-XX PET11 (1973)12013000060354le013-E0.00-l- 00000.i1089156028-06-02Introduction to semigroups380339UNISALENTOle01301-01-96ma -engus 01