Families of nested graphs with compatible symmetric-group actions
Families of nested graphs with compatible symmetric-group actions
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具有兼容对称组操作的嵌套图族
DOI:
10.1007/s00029-019-0520-9
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
White, Graham
中科院分区:
文献类型:
--
作者:
Ramos, Eric;White, Graham
For fixed positive integersnandk, the Kneser graphhas vertices labeled byk-element subsets ofand edges between disjoint sets. Keepingkfixed and allowingnto grow, one obtains a family of nested graphs, each of which is acted on by a symmetric group in a way which is compatible with these inclusions and the inclusions of each symmetric group into the next. In this paper, we provide a framework for studying families of this kind using the-module theory of Church et al. (Duke Math J 164(9):1833–1910, 2015), and show that this theory has a variety of asymptotic consequences for such families of graphs. These consequences span a range of topics including enumeration, concerning counting occurrences of subgraphs, topology, concerning Hom-complexes and configuration spaces of the graphs, and algebra, concerning the changing behaviors in the graph spectra.
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