The page number of genus g graphs is (g)

  • Authors:
  • L. Heath;S. Istrail

  • Affiliations:
  • Department of Mathematics, Massachusetts Institute of Technology, Cambridge, MA;Department of Mathematics, Wesleyan University, Middletown, CT

  • Venue:
  • STOC '87 Proceedings of the nineteenth annual ACM symposium on Theory of computing
  • Year:
  • 1987

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Abstract

This paper disproves the conjecture that graphs of fixed genus g ≤ 1 have unbounded pagenumber (Bernhart and Kainen, 1979). We show that genus g graphs can be embedded in &Ogr;(g) pages, and derive an &OHgr;(√g) lower bound. We present the first algorithm in the literature for embedding an arbitrary graph in a book with a non-trivial upper bound on the number of pages. We first compute the genus g of a graph using the algorithm of Filotti, Miller, Reif (1979), and then apply our (optimal-time) algorithm for obtaining an &Ogr;(g) page embedding. An important aspect of our construction is a new decomposition theorem, of independent interest, for a graph embedded on a surface. Book embedding has application in several areas, two of which are directly related to the results we obtain: fault-tolerant VLSI and complexity theory.