On groups and simplicial complexes
On groups and simplicial complexes
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关于群和单纯复形
DOI:
10.1016/j.ejc.2018.01.009
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发表时间:
2018
影响因子:
1
通讯作者:
Rosenthal, Ron
中科院分区:
文献类型:
--
作者:
Lubotzky, Alexander;Luria, Zur;Rosenthal, Ron
The theory of k-regular graphs is closely related to group theory. Every k-regular, bipartite graph is a Schreier graph with respect to some group G, a set of generators S (depending only on k) and a subgroup H. The goal of this paper is to begin to develop such a framework for k-regular simplicial complexes of general dimension d. Our approach does not directly generalize the concept of a Schreier graph, but still presents an extensive family of k-regular simplicial complexes as quotients of one universal object: the k-regular d-dimensional arboreal complex, which is itself a simplicial complex originating in one specific group depending only on d and k. Along the way we answer a question from Parzanchevski and Rosenthal (2016) on the spectral gap of higher dimensional Laplacians and prove a high dimensional analogue of Leighton’s graph covering theorem. This approach also suggests a random model for k-regular d-dimensional multicomplexes.
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DOI:
10.1142/s021819671650003x
发表时间:
2015
期刊:
Int. J. Algebra Comput.
影响因子:
--
作者:
P. Leemann
通讯作者:
P. Leemann
影响因子:
0.5
作者:
Thilo Kuessner
通讯作者:
Thilo Kuessner
影响因子:
1
作者:
A. Lubotzky;Beth Samuels;U. Vishne
通讯作者:
U. Vishne
DOI:
10.1016/0095-8956(82)90042-9
发表时间:
1982
期刊:
J. Comb. Theory B
影响因子:
--
作者:
F. Leighton
通讯作者:
F. Leighton