Sufficient and Necessary Condition of the Lp-Brunn-Minkowski Inequality Conjecture for p\in[0,1)

The Lp-Brunn-Minkowski inequality palys a central role in the Brunn-Minkowski theory proposed by Firey [13] in 60's and developed by Lutwak [26,27] in 90's, which generalizes the classical Brunn-Minkowski inequality by Lp-sum of convex bodies. The inequality has been established by Firey for p>1 and later been conjectured by Borozky-Lutwak-Yang-Zhang [5] for p\in[0,1). (see also [23,7]) The validity of this conjecture was verified for the planar case in [5], and for the higher dimensional case when p closing to 1 by Chen-Huang-Li-Liu [7]. (see alsoo a local version by Kolesnikov-Milman [23]) In this short note, we give a simple argument clarifying the equivalence between the full conjecture and a lower bound of the third eigenvalue of the Aleksandrov's problem.

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