Hossein Bagheri - Department of Mathematics, Yazd University, Yazd, Iran
S. Mohammad Sadegh Modares - Department of Mathematics, Yazd University, Yazd, Iran.

An MI-group is an algebraic structure based on a generalization of the concept of a monoid that satisfies the cancellation laws and is endowed with an invertible anti-automorphism representing inversion. In this paper, a topology is defined on an MI-group G under which G is  a topological MI-group. Then we will identify open, discrete and compact MI-subgroups. The connected components of the elements of G and connected MI-groups are also identified. Some features of the maximal MI-subgroups and ideals of a topological MI-group are investigated as well. Finally, some theorems about automatic continuity will be introduced.

MI-groups, Monoid, Pseudoidentity elements, canonical MI-subgroup, Full MI-subgroup, Internal topology