The I-chain Extensions of Bicyclic Semigroup
YU Bing-jun · Journal of Sichuan Normal University · 2009
By using foreparts I of the ω-chain(N0,) and the bicyclic semigroup B,a class of semigroups,denoted by BI,is constructed in this paper.The Green-relations in BI,the structure of the chain of idempotents in BI are characterized,the congruences and the homomorphic images of BI are studied.