Lit-only sigma-game on nondegenerate graphs

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A configuration of the lit-only-game on a graph is an assignment of one of two states, on or off, to each vertex of. Given a configuration, a move of the lit-only-game on allows the player to choose an on vertex of and change the states of all neighbors of. Given an integer, the underlying graph is said to be-lit if for any configuration, the number of on vertices can be reduced to at most by a finite sequence of moves. We give a description of the orbits of the lit-only-game on nondegenerate graphs which are not line graphs. We show that these graphs are 2-lit and provide a linear algebraic criterion for to be 1-lit.

Original languageEnglish
Pages (from-to)385-395
Number of pages11
JournalJournal of Algebraic Combinatorics
Issue number2
StatePublished - Mar 2014


  • Group action
  • Lit-only-game
  • Nondegenerate graph


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