A one-dimensional Whitney trick and Kuratowski’s graph planarity criterion
A one-dimensional Whitney trick and Kuratowski’s graph planarity criterion
复制标题
一维 Whitney 技巧和 Kuratowski 的图平面性准则
DOI:
10.1007/bf02773426
复制
发表时间:
1991
影响因子:
1
通讯作者:
K. S. Sarkaria
中科院分区:
文献类型:
--
作者:
K. S. Sarkaria
Forn≥3, the ordinary Whitney trick shows that a simplicial complexKnhaving van Kampen obstruction classo(kn)=0 embeds inR2n. We give a one-dimensional version of the Whitney trick, by means of which any graphK1satisfyingo(K1)=0 can be, step by step, embedded inR2. We then deduce some other planarity criteria, including Kuratowski’s, from this result. As a byproduct we also obtain a fascinating description of the mod 2 homology of the deleted product of a graph.