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arXiv 2101.06002math.FA
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Necessary and sufficient conditions for $n$-times Fréchet differentiability on ${\mathcal S}^p,$ $1 <p<\infty.$

Christian Le Merdy, Edward McDonald

英文摘要:

Let $1<p<\infty$ and let $n\geq 1$. It is proved that a function $f:{\mathbb R}\to {\mathbb C}$ is $n$-times Fréchet differentiable on ${\mathcal S}^p$ at every self-adjoint operator if and only if $f$ is $n$-times differentiable, $f',f'',\ldots,f^{(n)}$ are bounded and $f^{(n)}$ is uniformly continuous.

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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