Isomorphism Theorems for $\tau$-Semigroups and Ordered $\tau$-Semigroups

Ronnason Chinram, Kittisak Tinpun

Abstract

The notion of $\tau$-semigroups has been introduced by M. K. Sen and
N. K. Saha. $\tau$-semigroups generalize semigroups. Many classical notions of semigroups have been extended to $\tau$-semigroups. Ordered $\tau$-semigroups have been studied by some authors. In this paper, we investigate first and third isomorphism theorems for $\tau$-semigroups and ordered $\tau$-semigroups.