Degree-based graph construction

Hyunju Kim, Zoltn Toroczkai, Péter L. Erds, Istvn Miklós, Lszló A. Székely

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Degree-based graph construction is a ubiquitous problem in network modelling (Newman et al 2006 The Structure and Dynamics of Networks (Princeton Studies in Complexity) (Princeton, NJ: Princeton University Press), Boccaletti et al 2006 Phys. Rep. 424 175), ranging from social sciences to chemical compounds and biochemical reaction networks in the cell. This problem includes existence, enumeration, exhaustive construction and sampling questions with aspects that are still open today. Here we give necessary and sufficient conditions for a sequence of nonnegative integers to be realized as a simple graph's degree sequence, such that a given (but otherwise arbitrary) set of connections from an arbitrarily given node is avoided. We then use this result to present a swap-free algorithm that builds all simple graphs realizing a given degree sequence. In a wider context, we show that our result provides a greedy construction method to build all the f-factor subgraphs (Tutte 1952 Can. J. Math. 4 314) embedded within Kn Sk, where Kn is the complete graph and Sk is a star graph centred on one of the nodes.

Original languageEnglish
Article number392001
JournalJournal of Physics A: Mathematical and Theoretical
Volume42
Issue number39
DOIs
Publication statusPublished - Nov 19 2009

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ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Statistics and Probability
  • Modelling and Simulation
  • Mathematical Physics
  • Physics and Astronomy(all)

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