Cardinal invariants of closed graphs
Cardinal invariants of closed graphs
复制标题
封闭图的基数不变量
DOI：
10.1007/s11856-018-1745-6
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发表时间：
2017
影响因子：
1
通讯作者：
J. Zapletal
中科院分区：
文献类型：
--
作者：
Francis Adams;J. Zapletal
我们研究了紧度量空间上闭图G的几个基本特征。特别地，我们讨论了当有界数严格小于不被可数个紧G-反群覆盖的集合的最小大小一致时的问题。我们还给出了一类可数着色解析图的描述性集论刻画。
We study several cardinal characteristics of closed graphs G on compact metrizable spaces. In particular, we address the question when it is consistent for the bounding number to be strictly smaller than the smallest size of a set not covered by countably many compact G-anticliques. We also provide a descriptive set theoretic characterization of the class of analytic graphs with countable coloring number.