Lower bounds for the constants in the Bohnenblust–Hille inequality: The case of real scalars

Lower bounds for the constants in the Bohnenblust–Hille inequality: The case of real scalars
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Bohnenblust-Hille 不等式中常数的下界:实标量的情况

DOI:
10.1090/s0002-9939-2013-11791-0
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发表时间:
2011
期刊:
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通讯作者:
J. B. Seoane
J. B. Seoane
中科院分区:
--
文献类型:
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作者:
D. Diniz;G. Munoz;D. Pellegrino;J. B. Seoane

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Bohnenblust-Hille不等式是在1931年得到的,并且(在真实的标量的情况下)断言,对于每个正整数m,存在一个常数Cm,使得 ((N)Sigma(i 1,. . .,im=1)垂直条T(e(i1)(,.,)e(im))垂直杆(2 m/m+1))(m+1/2)<= C-m平行于T平行于 对所有正整数N和每个m-线性映射T:l(infinity)(N)x... xl(无穷大)(N)-> R.从那时起,一些作者已经获得了C-m值的上估计。然而,在这个简短的说明中提出的新奇是,我们提供了较低的(和非平凡的)界限C-m。
The Bohnenblust-Hille inequality was obtained in 1931 and ( in the case of real scalars) asserts that for every positive integer m there is a constant Cm so that ((N)Sigma(i1 , . . . , im=1)vertical bar T(e(i1) (,...,) e(im))vertical bar(2m/m+1))(m+1/2) <= C-m parallel to T parallel to for all positive integers N and every m-linear mapping T : l(infinity)(N) x...x l(infinity)(N) -> R. Since then, several authors have obtained upper estimates for the values of C-m. However, the novelty presented in this short note is that we provide lower (and non-trivial) bounds for C-m.