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arXiv · 1608.04021

Poincar\'e inequality 3/2 on the Hamming cube

Paata Ivanisvili·Alexander Volberg
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Abstract

For any $n \geq 1$, and any $f :\{-1,1\}^{n} \to \mathbb{R}$ we have $ \Re\, \mathbb{E}\, (f + i\, |\nabla f|)^{3/2} \leq \Re\, (\mathbb{E}f)^{3/2}, $ where $z^{3/2}$ for $z=x+iy$ is taken with principal branch and $\Re$ denotes the real part.

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Paata Ivanisvili, Alexander Volberg. 2016-08-13. Poincar\'e inequality 3/2 on the Hamming cube. https://arxiv.org/abs/1608.04021

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