M. K. Sen, N. K. Saha, "Orthodox -semigroups", International Journal of Mathematics and Mathematical Sciences, vol. 13, Article ID 463897, 8 pages, 1990. https://doi.org/10.1155/S016117129000076X
Let and be two non-empty sets. is called a -semigroup if , for and and , for all and for all . A semigroup can be considered as a -semigroup. In this paper we introduce orthodox -semigroups and extend different results of orthodox semigroups to orthodox -semigroups.
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