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arXiv 1606.06155math.CA
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径向齐次函数和对数函数导数的若干恒等式

Certain identities on derivatives of radial homogeneous and logarithmic functions

Kei Morii, Tokushi Sato, Yoshihiro Sawano

摘要:

设$k$为自然数,$s$为实数。在1维情况下,函数$\lvert x\rvert^s$和$\log \lvert x\rvert$的$k$阶导数分别是$\lvert x\rvert^{s-k}$和$\lvert x\rvert^{-k}$的倍数.在本文中,我们通过引入适当的导数范数,将这一事实推广到高维情形,并给出了其倍数的精确值。

英文摘要:

Let $k$ be a natural number and $s$ be real. In the 1-dimensional case, the $k$-th order derivatives of the functions $\lvert x\rvert^s$ and $\log \lvert x\rvert$ are multiples of $\lvert x\rvert^{s-k}$ and $\lvert x\rvert^{-k}$, respectively. In the present paper, we generalize this fact to higher dimensions by introducing a suitable norm of the derivatives, and give the exact values of the multiples.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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