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math.CO2019★ 1 cited
The determinant of the distance matrix of graphs with at most two cycles
Ezequiel Dratman, Luciano N. Grippo, Matín D. Safe +2
Let be a connected graph on vertices and its distance matrix. The formula for computing the determinant of this matrix in terms of the number of vertices is known wh…
math.CO2019
New bounds for the b-chromatic number of vertex deleted graphs
Renata Del-Vecchio, Mekkia Kouider
A b-coloring of a graph is a proper coloring of its vertices such that each color class contains a vertex adjacent to at least one vertex of every other color class. The b-chromati…