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Zero forcing sets and minimum rank of graphs

  • Francesco Barioli
  • , Wayne Barrett
  • , Steve Butler
  • , S.M. Cioabǎ
  • , D. Cvetković
  • , Shaun M. Fallat
  • , Chris D. Godsil
  • , W.H. Haemers
  • , Leslie Hogben
  • , Rana Mikkelson
  • , Sivaram K. Narayan
  • , Olga Pryporova
  • , Irene Sciriha
  • , Wasin So
  • , Dragan Stevanovic
  • , Hein van der Holst
  • , Kevin Vander Meulen
  • , Amy Wangsness Wehe

Research output: Contribution to journalArticleScientificpeer-review

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Abstract

The minimum rank of a simple graph G is defined to be the smallest possible rank over all symmetric real
matrices whose ijth entry (for i /= j ) is nonzero whenever {i, j } is an edge in G and is zero otherwise. This
paper introduces a new graph parameter, Z(G), that is the minimum size of a zero forcing set of vertices
and uses it to bound the minimum rank for numerous families of graphs, often enabling computation of the
minimum rank.
Original languageEnglish
Pages (from-to)1628-1648
JournalLinear Algebra and its Applications
Volume428
Issue number7
Publication statusPublished - 2008

Keywords

  • minimum rank
  • rank
  • graph
  • symmetric matrix
  • matrix

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