{4,5} is not coverable : a counterexample to a conjecture of Kaiser and Skrekovski
{4,5} is not coverable : a counterexample to a conjecture of Kaiser and Skrekovski
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{4,5} 不可覆盖:Kaiser 和 Skrekovski 猜想的反例
DOI:
10.1137/120877817
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
K. Yoshimoto
中科院分区:
文献类型:
--
作者:
R. Cada;S. Chiba;K. Ozeki;P. Vrana;K. Yoshimoto
For a subsetof the set of positive integers, a graphis called-coverableifhas a cycle (a subgraph in which all vertices have even degree) which intersects all edge-cutsinwith, andis said to becoverableif all graphs are-coverable. As a possible approach to the dominating cycle conjecture, Kaiser and Škrekovski conjectured in [SIAM J. Discrete Math., 22 (2008), pp. 861--874] thatis coverable, where. In this paper, we disprove Kaiser and Škrekovski's conjecture by showing that there exist infinitely many graphs which are not-coverable.