An Improved Trickle-Down Theorem for Partite Complexes
An Improved Trickle-Down Theorem for Partite Complexes
复制标题
改进的分配合物滴流定理
DOI:
10.48550/arxiv.2208.04486
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发表时间:
2022
影响因子:
2
通讯作者:
S. Gharan
中科院分区:
文献类型:
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作者:
Dorna Abdolazimi;S. Gharan
We prove a strengthening of the trickle down theorem for partite complexes. Given a $(d+1)$-partite $d$-dimensional simplicial complex, we show that if"on average"the links of faces of co-dimension 2 are $\frac{1-\delta}{d}$-(one-sided) spectral expanders, then the link of any face of co-dimension $k$ is an $O(\frac{1-\delta}{k\delta})$-(one-sided) spectral expander, for all $3\leq k\leq d+1$. For an application, using our theorem as a black-box, we show that links of faces of co-dimension $k$ in recent constructions of bounded degree high dimensional expanders have spectral expansion at most $O(1/k)$ fraction of the spectral expansion of the links of the worst faces of co-dimension $2$.
DOI:
10.1109/focs52979.2021.00024
发表时间:
2021-06
期刊:
2021 IEEE 62nd Annual Symposium on Foundations of Computer Science (FOCS)
影响因子:
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作者:
Dorna Abdolazimi;Kuikui Liu;S. Gharan
通讯作者:
Dorna Abdolazimi;Kuikui Liu;S. Gharan
DOI:
10.1145/3406325.3451035
发表时间:
2020-11
期刊:
Proceedings of the 53rd Annual ACM SIGACT Symposium on Theory of Computing
影响因子:
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作者:
Zongchen Chen;Kuikui Liu;Eric Vigoda
通讯作者:
Zongchen Chen;Kuikui Liu;Eric Vigoda
DOI:
10.1109/focs.2019.00021
发表时间:
2019
期刊:
2019 IEEE 60th Annual Symposium on Foundations of Computer Science (FOCS
影响因子:
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作者:
Alev, Vedat Levi;Granha Jeronimo, Fernando;Tulsiani, Madhur
通讯作者:
Tulsiani, Madhur