论文标题
星星和梳子的二元定理I：任意星星和梳子
Duality theorems for stars and combs I: Arbitrary stars and combs
论文作者
论文摘要
为了扩展无限图的众所周知的星形弯曲引理，我们表征了不包含无限梳子或无限恒星的图形，该图形附着在给定的一组顶点上。我们提供几种特征：就普通树，树状分解，无光线图和缠结分离的分离器的等级而言。
Extending the well-known star-comb lemma for infinite graphs, we characterise the graphs that do not contain an infinite comb or an infinite star, respectively, attached to a given set of vertices. We offer several characterisations: in terms of normal trees, tree-decompositions, ranks of rayless graphs and tangle-distinguishing separators.
