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arXiv · 2312.07020

Interpolation of derivatives and ultradifferentiable regularity

Armin Rainer·Gerhard Schindl
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Abstract

Interpolation inequalities for $C^m$ functions allow to bound derivatives of intermediate order $0 < j<m$ by bounds for the derivatives of order $0$ and $m$. We review various interpolation inequalities for $L^p$-norms ($1 \le p \le \infty$) in arbitrary finite dimensions. They allow us to study ultradifferentiable regularity by lacunary estimates in a comprehensive way, striving for minimal assumptions on the weights.

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Armin Rainer, Gerhard Schindl. 2023-12-12. Interpolation of derivatives and ultradifferentiable regularity. https://doi.org/10.1002/mana.202300567

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