Distinct Angle Problems and Variants
Distinct Angle Problems and Variants
复制标题
不同角度问题及其变体
DOI:
10.1007/s00454-022-00466-w
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发表时间:
2023
影响因子:
0.8
通讯作者:
Wolf, Charles
中科院分区:
文献类型:
--
作者:
Fleischmann, Henry L.;Hu, Hongyi B.;Jackson, Faye;Miller, Steven J.;Palsson, Eyvindur A.;Pesikoff, Ethan;Wolf, Charles
The Erdős distinct distance problem is a ubiquitous problem in discrete geometry. Less well known is Erdős’s distinct angle problem, the problem of finding the minimum number of distinct angles betweennnon-collinear points in the plane. The standard problem is already well understood. However, it admits many of the same variants as the distinct distance problem, many of which are unstudied. We provide upper and lower bounds on a broad class of distinct angle problems. We show that the number of distinct angles formed bynpoints in general position isproviding the first non-trivial bound for this quantity. We introduce a new class of asymptotically optimal point configurations with no four cocircular points. Then, we analyze the sensitivity of asymptotically optimal point sets to perturbation, yielding a much broader class of asymptotically optimal configurations. In higher dimensions we show that a variant of Lenz’s construction admits fewer distinct angles than the optimal configurations in two dimensions. We also show that the minimum size of a maximal subset ofnpoints in general position admitting only unique angles isand. We also provide bounds on the partite variants of the standard distinct angle problem.
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DOI:
10.1145/2582112.2582135
发表时间:
2013-08
期刊:
Proceedings of the thirtieth annual symposium on Computational geometry
影响因子:
--
作者:
J. Pach;Frank de Zeeuw
通讯作者:
J. Pach;Frank de Zeeuw
影响因子:
0.6
作者:
Marcos Charalambides
通讯作者:
Marcos Charalambides
影响因子:
1.1
作者:
G. Elekes
通讯作者:
G. Elekes
影响因子:
1.1
作者:
H. Lefmann;Torsten Thiele
通讯作者:
Torsten Thiele
影响因子:
1.1
作者:
R. Guy;P. Erdös
通讯作者:
P. Erdös