A Relative of Hadwiger's Conjecture
A Relative of Hadwiger's Conjecture
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哈维格猜想的一个亲戚
DOI:
10.1137/141002177
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
P. Seymour
中科院分区:
文献类型:
--
作者:
Katherine Edwards;D. Kang;Jaehoon Kim;Sang;P. Seymour
Hadwiger's conjecture asserts that if a simple graph $G$ has no $K_{t+1}$ minor, then its vertex set $V(G)$ can be partitioned into $t$ stable sets. This is still open, but we prove under the same hypothesis that $V(G)$ can be partitioned into $t$ sets $X_1,\ldots,X_t$, such that for $1\le i\le t$, the subgraph induced on $X_i$ has maximum degree at most a function of $t$. This is sharp, in that the conclusion becomes false if we ask for a partition into $t-1$ sets with the same property.