C8+{e1},C8+{e1}+{e2}与Pn的笛卡儿积的交叉数
关键字:图;画法;交叉数;C8;笛卡儿积;同胚; Pn
Keywords: graph; drawing; crossing number; C8; the cartesian product; homeomorphism; Pn关键字:图;画法;交叉数;C8;笛卡儿积;同胚; Pn
Keywords: graph; drawing; crossing number; C8; the cartesian product; homeomorphism; Pn