Random simplicial complexes, duality and the critical dimension
Random simplicial complexes, duality and the critical dimension
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随机单纯复形、对偶性和临界维数
DOI:
10.1142/s1793525320500387
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发表时间:
2019
影响因子:
0.8
通讯作者:
Farber M
中科院分区:
文献类型:
--
作者:
Farber M
In this paper, we discuss two general models of random simplicial complexes which we callthe lower and the uppermodels. We show that these models are dual to each other with respect to combinatorial Alexander duality. The behavior of the Betti numbers in the lower model is characterized by the notion ofcritical dimension, which was introduced by A. Costa and M. Farber in A. Costa and M. Farber, Large random simplicial complexes III: The critical dimension,J. Knot Theory Ramifications26(2017) 1740010: random simplicial complexes in the lower model are homologically approximated by a wedge of spheres of dimension equal the critical dimension. In this paper, we study the Betti numbers in the upper model and introduce new notions ofcritical dimension and spread. We prove that (under certain conditions) an upper random simplicial complex is homologically approximated by a wedge of spheres of the critical dimension.
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DOI:
--
发表时间:
2006
期刊:
Comb.
影响因子:
--
作者:
N. Linial;R. Meshulam
通讯作者:
R. Meshulam
影响因子:
0.8
作者:
Costa A
通讯作者:
Costa A
影响因子:
0.7
作者:
M. Farber
通讯作者:
M. Farber
影响因子:
0.8
作者:
A. Björner;M. Tancer
通讯作者:
M. Tancer
影响因子:
0.6
作者:
Farber M
通讯作者:
Farber M