Browsing by Subject "chromatic number"

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  • Some properties of the nilradical and non-nilradical graphs over finite commutative ring Zn 
    Chandra, S.; Prakash, O.; Suthar, S. (ДЗ "ЛНУ імені Тараса Шевченка", 2018)
    Let Zn be the finite commutative ring of residue classes modulo n with identity and Γ(Zn) be its zero-divisor graph. In this paper, we investigate some properties of nilradical graph, denoted by N(Zn) and non-nilradical ...
  • The edge chromatic number of ΓI (R) 
    Kala, R.; Mallika, A.; Selvakumar, K. (2017)
    For a commutative ring R and an ideal I of R, the ideal-based zero-divisor graph is the undirected graph ΓI (R) with vertices {x ∈ R−I : xy ∈ I for some y ∈ R−I}, where distinct vertices x and y are adjacent if and only ...