On the maximal perimeter of sections of the cube
On the maximal perimeter of sections of the cube
复制标题
关于正方体截面的最大周长
DOI:
10.1016/j.aim.2019.02.017
复制
发表时间:
2018
影响因子:
1.7
通讯作者:
A. Koldobsky
中科院分区:
文献类型:
--
作者:
Hermann Koenig;A. Koldobsky
We prove that the (n− 2)-dimensional surface area (perimeter) of central hyperplane sections of the n-dimensional unit cube is maximal for the hyperplane perpendicular to the vector (1, 1, 0,…, 0). This gives a positive answer to a question of Pełczyński who solved the three dimensional case. We study both the real and the complex versions of this problem. We also use our result to show that the answer to an analogue of the Busemann–Petty problem for the surface area is negative in dimensions 14 and higher.