Abstract
A semigroup is called completely J (ℓ) -simple if it is isomorphic to some Rees matrix semigroup over a left cancellative monoid and each entry of whose sandwich matrix is in the group of units of the left cancellative monoid. It is proved that completely J (ℓ)-simple semigroups form a quasivarity. Moreover, the construction of free completely J (ℓ)-simple semigroups is given. It is found that a free completely J (ℓ)-simple semigroup is just a free completely J*-simple semigroup and also a full subsemigroup of some completely simple semigroups.
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Supported by National Natural Science Foundation of China (Grant No. 11361027); the Natural Science Foundation of Jiangxi Province and the Science Foundation of the Education Department of Jiangxi Province, China
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Guo, J.Y., Guo, X.J. & Ding, J.Y. Free completely J (ℓ)-simple Semigroups. Acta. Math. Sin.-English Ser. 31, 1086–1096 (2015). https://doi.org/10.1007/s10114-015-4117-8
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DOI: https://doi.org/10.1007/s10114-015-4117-8