Deriving Formulas for Domination Numbers of Fasciagraphs and Rotagraphs

  • Authors:
  • Janez Zerovnik

  • Affiliations:
  • -

  • Venue:
  • FCT '99 Proceedings of the 12th International Symposium on Fundamentals of Computation Theory
  • Year:
  • 1999

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Abstract

Recently, an algebraic approach which can be used to compute distance-based graph invariants on fasciagraphs and rotagraphs was given in [Mohar, Juvan, Žerovnik, Discrete Appl. Math. 80 (1997) 57-71]. Here we give an analogous method which can be employed for deriving formulas for the domination number of fasciagraphs and rotagraphs. In other words, it computes the domination numbers of these graphs in constant time, i.e. in time which depends only on the size and structure of a monograph and is independent of the number of monographs. Some further generalizations of the method are discussed, in particular the computation of the independent number and the k-coloring decision problem. Examples of fasciagraphs and rotagraphs include complete grid graphs. Grid graphs are one of the most frequently used model of processor interconnections in multiprocessor VLSI systems.