The authors give an upper bound for the projective plane crossing number of a circular graph. Also, the authors prove the projective plane crossing numbers of circular graph C (8, 3) and C (9, 3) are 2 and 1, respectively.
机构:
Univ Autonoma San Luis Potosi, Inst Fis, San Luis Potosi 78000, SLP, MexicoUniv Autonoma San Luis Potosi, Inst Fis, San Luis Potosi 78000, SLP, Mexico
Leanos, Jesus
Salazar, Gelasio
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Univ Autonoma San Luis Potosi, Inst Fis, San Luis Potosi 78000, SLP, MexicoUniv Autonoma San Luis Potosi, Inst Fis, San Luis Potosi 78000, SLP, Mexico
机构:
Hunan First Normal Univ, Sch Math & Stat, Changsha 410205, Peoples R ChinaHunan First Normal Univ, Sch Math & Stat, Changsha 410205, Peoples R China