Best constants of harmonic approximation of some convolution classes associated with Laplace operato

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在这份报纸,我们认为最好的 EFET (指数的类型的全部函数) 是在 d 上与 Laplace 操作员联系的一些卷绕旋转类的近似并且在空格 L 1 (2 ) 和 L 2 (d ) 获得准确常数。而且,他们 $\\mathbb 上的类比的三角法的近似的最好的常数 { T }^ d $ 也被获得。
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