TY - JOUR EP - 470 VL - 106 SN - 0047-2468 ID - publicatio15939 AV - restricted Y1 - 2015/// A1 - Kozma József A1 - Kurusa Árpád N2 - If a Hilbert geometry satisfies a rather weak version of either Ceva?s or Menelaus? theorem for every triangle, then it is hyperbolic. SP - 465 UR - http://publicatio.bibl.u-szeged.hu/15939/ JF - JOURNAL OF GEOMETRY TI - Ceva's and Menelaus' theorems characterize the hyperbolic geometry among Hilbert geometries IS - 3 ER -