Enumeration and limit laws for series-parallel graphs

  • Authors:
  • Manuel Bodirsky;Omer Giménez;Mihyun Kang;Marc Noy

  • Affiliations:
  • Institut für Informatik, Humboldt-Universität zu Berlin, Unten der Linden 6, 10099 Berlin, Germany;Departament de Tecnologia, Universitat Pompeu Fabra, Passeig de Circumval.lació 8, 08003 Barcelona, Spain;Institut für Informatik, Humboldt-Universität zu Berlin, Unten der Linden 6, 10099 Berlin, Germany;Departament de Matemítica Aplicada II, Universitat Politècnica de Catalunya, Jordi Girona 1-3, 08034 Barcelona, Spain

  • Venue:
  • European Journal of Combinatorics
  • Year:
  • 2007

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Abstract

We show that the number g"n of labelled series-parallel graphs on n vertices is asymptotically g"n~g@?n^-^5^/^2@c^nn!, where @c and g are explicit computable constants. We show that the number of edges in random series-parallel graphs is asymptotically normal with linear mean and variance, and that it is sharply concentrated around its expected value. Similar results are proved for labelled outerplanar graphs and for graphs not containing K"2","3 as a minor.