Maximum induced subgraph of a recursive circulant

  • Authors:
  • Xiaofan Yang;David J. Evans;Graham M. Megson

  • Affiliations:
  • Department of Computer Science and Technology, Chongqing University, Chongqing, 400044, P.R. China;Parallelism, Algorithms and Architectures Research Centre, Department of Computer Science, Loughborough University, Loughborough, Leicestershire, LE11 3TU, UK;Department of Computer Science, School of Systems Engineering, University of Reading, P.O. Box 225, Whiteknights, Reading, Berkshire, RG6 6AY, UK

  • Venue:
  • Information Processing Letters
  • Year:
  • 2005

Quantified Score

Hi-index 0.89

Visualization

Abstract

The recursive circulant RC(2^n,4) enjoys several attractive topological properties. Let max_@?"G(m) denote the maximum number of edges in a subgraph of graph G induced by m nodes. In this paper, we show that max_@?"R"C"("2"^"n","4")(m)=@?"i"="0^r(p"i/2+i)2^p^"^i, where p"0p"1...p"r are nonnegative integers defined by m=@?"i"="0^r2^p^"^i. We then apply this formula to find the bisection width of RC(2^n,4). The conclusion shows that, as n-dimensional cube, RC(2^n,4) enjoys a linear bisection width.