Isomorphic Busemann-Petty problem for sections of proportional dimensions
Isomorphic Busemann-Petty problem for sections of proportional dimensions
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比例尺寸截面的同构 Busemann-Petty 问题
DOI:
10.1016/j.aam.2015.09.013
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发表时间:
2015
期刊:
影响因子:
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通讯作者:
A. Koldobsky
中科院分区:
文献类型:
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作者:
A. Koldobsky
The main result of this note is a solution to the isomorphic Busemann–Petty problem for sections of proportional dimensions, as follows. Suppose that 0< λ< 1, k> λ n, and K, L are origin-symmetric convex bodies in R n satisfying the inequalities| K∩ H|≤| L∩ H|,∀ H∈ Gr n− k, where Gr n− k is the Grassmanian of (n− k)-dimensional subspaces of R n, and| K| stands for volume of proper dimension. Then| K| n− k n≤ C k ((1− log λ) 3 λ) k| L| n− k n, where C is an absolute constant.