Covering by Planks and Avoiding Zeros of Polynomials
Covering by Planks and Avoiding Zeros of Polynomials
复制标题
用木板覆盖并避免多项式的零点
DOI:
10.1093/imrn/rnac259
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发表时间:
2022
影响因子:
1
通讯作者:
Polyanskii, Alexandr
中科院分区:
文献类型:
--
作者:
Glazyrin, Alexey;Karasev, Roman;Polyanskii, Alexandr
We note that the recent polynomial proofs of the spherical and complex plank covering problems by Zhao and Ortega-Moreno give some general information on zeros of real and complex polynomials restricted to the unit sphere. As a corollary of these results, we establish several generalizations of the celebrated Bang plank covering theorem. We prove a tight polynomial analog of the Bang theorem for the Euclidean ball and an even stronger polynomial version for the complex projective space. Specifically, for the ball, we show that for every real nonzero-variate polynomialof degree, there exists a point in the unit-dimensional ball at distance at leastfrom the zero set of the polynomial. Using the polynomial approach, we also prove the strengthening of the Fejes Tóth zone conjecture on covering a sphere by spherical segments, closed parts of the sphere between two parallel hyperplanes. In particular, we show that the sum of angular widths of spherical segments covering the whole sphere is at least.
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影响因子:
1.1
作者:
A. Polyanskii
通讯作者:
A. Polyanskii
影响因子:
0.8
作者:
通讯作者:
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影响因子:
0.9
作者:
K. Ball
通讯作者:
K. Ball
影响因子:
0.5
作者:
L. Tóth
通讯作者:
L. Tóth
DOI:
10.1080/00029890.2022.2071569
发表时间:
2022
期刊:
The American Mathematical Monthly
影响因子:
--
作者:
Zhao, Yufei
通讯作者:
Zhao, Yufei