New lower bounds for Tverberg partitions with tolerance in the plane
New lower bounds for Tverberg partitions with tolerance in the plane
复制标题
具有平面容差的 Tverberg 分区的新下限
DOI:
10.1016/j.dam.2020.02.007
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发表时间:
2020
影响因子:
1.1
通讯作者:
Haghpanah, Mohammadreza
中科院分区:
文献类型:
--
作者:
Bereg, Sergey;Haghpanah, Mohammadreza
Let P be a set n points in a d-dimensional space. Tverberg’s theorem says that, if n is at least (k− 1)(d+ 1)+ 1, then P can be partitioned into k sets whose convex hulls intersect. Partitions with this property are called Tverberg partitions. A partition has tolerance t if the partition remains a Tverberg partition after removal of any set of t points from P. Tolerant Tverberg partitions exist in any dimension provided that n is sufficiently large. Let N (d, k, t) be the smallest value of n such that tolerant Tverberg partitions exist for any set of n points in R d. Only few exact values of N (d, k, t) are known. In this paper we establish a new tight bound for N (2, 2, 2). We also prove many new lower bounds on N (2, k, t) for k≥ 2 and t≥ 1.
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发表时间:
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期刊:
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影响因子:
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作者:
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影响因子:
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影响因子:
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发表时间:
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期刊:
Eur. J. Comb.
影响因子:
--
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