Abstract
In this article, by using the notion of generalized action, we introduce
the concept of crossed module of hypergroups, in the sense of Marty,
and its related structures from the light of crossed polymodules. Hypergroups
in the sense of Marty are more different than polygroups since
they have not identity element or inverse element in general. Examples
of crossed modules of hypergroups are originally presented. These
examples illustrate the structure and behavior of crossed modules of
hypergroups. Moreover, we obtain a crossed module in the sense of
Whitehead from a crossed module of hypergroups by applying the notion
of fundamental relation.