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arxiv: 1807.03911 · v1 · pith:V3QKUMQWnew · submitted 2018-07-11 · 🧬 q-bio.BM

Small-world networks and RNA secondary structures

classification 🧬 q-bio.BM
keywords secondarystructuresasymptoticnetworkssmall-worldadditionanalysisaverage
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Let Sn denote the network of all RNA secondary structures of length n, in which undirected edges exist between structures s, t such that t is obtained from s by the addition, removal or shift of a single base pair. Using context-free grammars, generating functions and complex analysis, we show that the asymptotic average degree is O(n) and that the asymptotic clustering coeffcient is O(1/n), from which it follows that the family Sn, n = 1,2,3,... of secondary structure networks is not small-world.

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