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:
影响因子:
--
通讯作者:
J. B. Seoane
中科院分区:
文献类型:
--
作者:
D. Diniz;G. Munoz;D. Pellegrino;J. B. Seoane
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.