A graph is said to be projective-planar if it is nonplanar and is embeddable in a projective plane. In this paper we show that the numbers of projective-planar embeddings (up to equivalence) of all 5-connected graphs have an upper bound c(less-than-or-equal-to 120).
机构:
Natl Inst Informat, Chiyoda Ku, Tokyo 1018430, Japan
JST, ERATO, Kawarabayashi Large Graph Project, Tokyo, JapanNatl Inst Informat, Chiyoda Ku, Tokyo 1018430, Japan
Kawarabayashi, Ken-ichi
Ozeki, Kenta
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机构:
Natl Inst Informat, Chiyoda Ku, Tokyo 1018430, Japan
JST, ERATO, Kawarabayashi Large Graph Project, Tokyo, JapanNatl Inst Informat, Chiyoda Ku, Tokyo 1018430, Japan