$p$-th Clustering coefficients and $q$-$th$ degrees of separation based on String-Adjacent Formulation

The phenomenon of six degrees of separation is an old but attractive subject. The deep understanding has been uncovered yet, especially how closed paths included in a network affect six degrees of separation are an important subject left yet. For it, some researches have been made\cite{Newm21}, \cite{Aoyama}. Recently we have develop a formalism \cite{Toyota3},\cite{Toyota4} to explore the subject based on the string formalism developed by Aoyama\cite{Aoyama}. The formalism can systematically investigate the effect of closed paths, especially generalized clustering coefficient $C_{(p)}$ introduced in \cite{Toyota4}, on six degrees of separation. In this article, we analyze general $q$-th degrees of separation by using the formalism developed by us. So we find that the scale free network with exponent $γ=3$ just display six degrees of separation. Furthermore we drive a phenomenological relation between the separation number $q$ and $C_{(p)}$ that has crucial information on circle structures in networks.

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