Measure-valued extension of the log-Brunn–Minkowski inequality

Let p[0,1]p \in [0,1]. Let μ\mu be a symmetric measure in Rn\mathbb R^n with an α\alpha-concave density function, where αpn\alpha \geq -\frac{p}{n}. Let p\oplus_p denote the pp-Firey combination used in the source, and let MsλM_s^\lambda denote the ss-mean. Measure-valued log-Brunn–Minkowski extension. For every pair of symmetric convex bodies K,LK,L in Rn\mathbb R^n and every λ[0,1]\lambda \in [0,1],

μ((1λ)KpλL)M(np+1α)1λ(μ(K),μ(L)).\mu((1-\lambda) \cdot K \oplus_p \lambda \cdot L) \geq M_{\left(\frac{n}{p}+\frac{1}{\alpha}\right)^{-1}}^\lambda(\mu(K),\mu(L)).

This is presented as an extension proposed by the author in earlier work. The supplied passage does not establish the inequality or provide a resolution status, and the notation for the pp-combination and generalized mean is only referred to rather than fully defined here.

Sources & referencesView supporting material

Primary source

Arnaud Marsiglietti, “Borell's generalized Prékopa-Leindler inequality: A simple proof”, arXiv:1509.06444 (2015).

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