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Inequalities for derivatives with the Fourier transform
Applied and Computational Harmonic Analysis ( IF 2.5 ) Pub Date : 2021-02-05 , DOI: 10.1016/j.acha.2021.02.001 K.Yu. Osipenko
中文翻译:
傅立叶变换的导数不等式
更新日期:2021-02-12
Applied and Computational Harmonic Analysis ( IF 2.5 ) Pub Date : 2021-02-05 , DOI: 10.1016/j.acha.2021.02.001 K.Yu. Osipenko
In this paper we study sharp constants in inequalities of the following form where is the Fourier transform of . The sharp value of K in the general case (that is, for all and ) was known only for and . We obtain the sharp constant in the general case for , , and . We also generalized this two cases on multidimensional situation. The sharp constants is obtained for fractional degrees of the Laplace operator and derivatives of order .
中文翻译:
傅立叶变换的导数不等式
在本文中,我们研究以下形式的不等式中的尖锐常数 在哪里 是的傅立叶变换 。的尖锐值ķ在一般情况下(即,对于所有的 和 )仅因 和 。我们得到一般情况下的锐常数, , 和 。我们还将这两种情况归纳为多维情况。对于拉普拉斯算子的分数阶数,获得了尖锐常数 和衍生品 顺序 。