Mahler's conjecture for the restricted class with s-concave power in \mathcal{F}

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Let s(1n,0)s\in(-\frac{1}{n},0) and let g:RnR+g:\mathbb{R}^{n}\to\mathbb{R}_{+} be even with gsFg^{s}\in\mathcal{F}, where F\mathcal{F} is the set of convex lower semicontinuous functions f:Rn(0,+)f:\mathbb{R}^{n}\to(0,+\infty) such that, for every x0x\ne0, limt+f(tx)=+\lim_{t\to+\infty}f(tx)=+\infty and tf(tx)/tt\mapsto f(tx)/t is non-increasing on (0,+)(0,+\infty). Restricted Mahler conjecture.

Rng(x)dxRnLsg(y)dy11+ns4n(1+s)(1+ns),\int_{\mathbb{R}^{n}}g(x)\,dx\int_{\mathbb{R}^{n}}\mathcal{L}_{s}g(y)\,dy\geq\frac{1}{1+ns}\,\frac{4^{n}}{(1+s)\cdots(1+ns)},

with equality for g(x)=(max(1,x))1/sg(x)=(\max(1,\|x\|_{\infty}))^{1/s}. This conjecture is known for unconditional functions, in particular in dimension one, and the paper proves it in dimension two when 1/sN-1/s\in\mathbb{N}; the general statement remains open.

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Primary source

Matthieu Fradelizi and Elie Nakhle, “On Mahler's conjecture for even s-concave functions in dimensions 1 and 2”, arXiv:2412.12372 (2025).

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