Covering by homothets and illuminating convex bodies
Covering by homothets and illuminating convex bodies
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由同位覆盖和照明凸体
DOI:
10.1090/proc/15516
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发表时间:
2022
影响因子:
1
通讯作者:
Glazyrin, Alexey
中科院分区:
文献类型:
--
作者:
Glazyrin, Alexey
The paper is devoted to coverings by translative homothets and illuminations of convex bodies. For a given positive numberand a convex body,is the infimum of-powers of finitely many homothety coefficients less than 1 such that there is a covering ofby translative homothets with these coefficients.is the minimal number of directions such that the boundary ofcan be illuminated by this number of directions except for a subset whose Hausdorff dimension is less than. In this paper, we prove that, find upper and lower bounds for both numbers, and discuss several general conjectures. In particular, we show thatfor almost allandwhenis the-dimensional cube, thus disproving the conjecture from Brass, Moser, and Pach [Research problems in discrete geometry, Springer, New York, 2005]. References
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DOI:
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发表时间:
1985
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1997
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发表时间:
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期刊:
arXiv: Metric Geometry
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DOI:
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发表时间:
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