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Phys. Rev. Lett. 89, 258703 (2002) [4 pages]

Statistics of Changes in Lead Node in Connectivity-Driven Networks

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P. L. Krapivsky* and S. Redner
Center for BioDynamics, Center for Polymer Studies, and Department of Physics, Boston University, Boston, Massachusetts, 02215

Received 17 July 2002; published 3 December 2002

We study statistical properties of the highest degree, or most popular, nodes in growing networks. We show that the number of lead changes increases logarithmically with network size N, independent of the details of the growth mechanism. The probability that the first node retains the lead approaches a finite constant for popularity-driven growth, and decays as N-ϕ (ln⁡N)-1/2, with ϕ=0.08607…, for growth with no popularity bias.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.258703
DOI:
10.1103/PhysRevLett.89.258703
PACS:
89.75.Hc, 02.50.Cw, 05.40.–a, 87.23.Ge

*Electronic address: paulk@bu.edu

Electronic address: redner@bu.edu