The classification of finite groups by using iteration digraphs
Czechoslovak Mathematical Journal, Tome 66 (2016) no. 4, pp. 1103-1117.

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A digraph is associated with a finite group by utilizing the power map ${f\colon G \rightarrow G}$ defined by $f(x)=x^{k}$ for all $x\in G$, where $k$ is a fixed natural number. It is denoted by $\gamma _{G}(n,k)$. In this paper, the generalized quaternion and $2$-groups are studied. The height structure is discussed for the generalized quaternion. The necessary and sufficient conditions on a power digraph of a $2$-group are determined for a $2$-group to be a generalized quaternion group. Further, the classification of two generated $2$-groups as abelian or non-abelian in terms of semi-regularity of the power digraphs is completed.
DOI : 10.1007/s10587-016-0312-8
Classification : 05C20, 05C25, 05C50, 20B25, 20D15
Mots-clés : $2$-group; generalized quaternion group; iteration digraph; cycle; indegree; fixed point; regular digraph 
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Ahmad, Uzma; Moeen, Muqadas. The classification of finite groups by using iteration digraphs. Czechoslovak Mathematical Journal, Tome 66 (2016) no. 4, pp. 1103-1117. doi : 10.1007/s10587-016-0312-8. https://geodesic-test.mathdoc.fr/articles/10.1007/s10587-016-0312-8/

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