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  1. Article

    Open Access

    A Tight Bound for the Number of Edges of Matchstick Graphs

    A matchstick graph is a plane graph with edges drawn as unit-distance line segments. Harborth introduced these graphs in 1981 and conjectured that the maximum number of edges for a matchstick graph on n vertices ...

    Jérémy Lavollée, Konrad Swanepoel in Discrete & Computational Geometry (2023)