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math.MG2019
The right acute angles problem?
Andrey Kupavskii, Dmitriy Zakharov
The Danzer--Grünbaum acute angles problem asks for the largest size of a set of points in that determines only acute angles. Recently, the problem was essentially s…
math.MG2017
Acute sets
D. Zakharov
A set of points in is acute, if any three points from this set form an acute angle. In this note we construct an acute set in of size at least $2^{d/2…