Efficient connectivity testing of hypercubic networks with faults

  • Authors:
  • Tomáš Dvořák;Jiří Fink;Petr Gregor;Václav Koubek;Tomasz Radzik

  • Affiliations:
  • Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic;Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic;Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic;Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic;Department of Computer Science, King's College London, United Kingdom

  • Venue:
  • IWOCA'10 Proceedings of the 21st international conference on Combinatorial algorithms
  • Year:
  • 2010

Quantified Score

Hi-index 0.00

Visualization

Abstract

Given a connected graph G and a set F of faulty vertices of G, let G - F be the graph obtained from G by deletion of all vertices of F and edges incident with them. Is there an algorithm, whose running time may be bounded by a polynomial function of |F| and log |V (G)|, which decides whether G-F is still connected? Even though the answer to this question is negative in general, we describe an algorithm which resolves this problem for the n-dimensional hypercube in time O(|F|n3). Furthermore, we sketch a more general algorithm that is efficient for graph classes with good vertex expansion properties.