On the Classification of n-Centralizers Groups
Centralizers of Elements. n-Centralizers Groups. Classification of Groups.
Let G a group and denote by Cent(G) the set of all its centralizers of elements. We say that G is n-centralizer when |Cent(G)|= n. Of course, a group is 1-centralizer if, and only if, is abelian. Furthermore, does not exists 2 or 3-centralizers groups. A natural question is if fixed the size of Cent(G), if it is possible to obtain a characterization of the group G. In this work, based on articles of A. Abdollahi, S. M. J. Amiri, A. M. Hassanabadi [1] and M. Zarrin [29], we study and classify the n-centralizers groups for n \in {4,5,6,7,8}. In addition, we also study the paper of S. M. J. Amiri and H. Rostami [5], in which another approach was taken, in which, when considering the class of all non-abelian groups of a prefixed order, we classify the one that has the smallest number of centralizers.