Layout volumes of the hypercube

  • Authors:
  • Lubomir Torok;Imrich Vrt'o

  • Affiliations:
  • Institute of Mathematics and Computer Science, Banská Bystrica, Slovak Republic;Institute of Mathematics, Slovak Academy of Sciences, Bratislava, Slovak Republic

  • Venue:
  • GD'04 Proceedings of the 12th international conference on Graph Drawing
  • Year:
  • 2004

Quantified Score

Hi-index 0.00

Visualization

Abstract

We study 3-dimensional layouts of the hypercube in a 1-active layer and a general model. The problem can be understood as a graph drawing problem in 3D space and was addressed at Graph Drawing 2003 [5]. For both models we prove general lower bounds which relate volumes of layouts to a graph parameter called cutwidth. Then we propose tight bounds on volumes of layouts of N-vertex hypercubes. Especially, we have $ {\rm VOL}_{1-AL}(Q_{\log N})= \frac{2}{3}N^{\frac{3}{2}}\log N +O(N^{\frac{3}{2}}), $ for even log N and ${\rm VOL}(Q_{\log N})=\frac{2\sqrt{6}}{9}N^{\frac{3}{2}}+O(N^{4/3}\log N),$ for log N divisible by 3. The 1-active layer layout can be easily extended to a 2-active layer (bottom and top) layout which improves a result from [5].