The local LpL^p-Brunn-Minkowski conjecture

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Let K,L∈Ke(Rn)K,L\in\mathcal{K}_e(\mathbb{R}^n) be origin-symmetric convex bodies containing the origin in their interiors. Let VV denote the mixed volume functional, let SKS_K be the surface area measure of KK, let hKh_K and hLh_L be the support functions, and let K[n−1]K[n-1] and K[n−2]K[n-2] indicate repeated arguments in the mixed volume. For all p≥0p\geq 0, The local LpL^p-Brunn-Minkowski conjecture.

V(L,K[n−1])2vol⁡(K)≥n−1n−pV(L,L,K[n−2])+1−pn(n−p)∫Sn−1hL2hKdSK.\frac{V(L,K[n-1])^2}{\operatorname{vol}(K)}\geq \frac{n-1}{n-p}V(L,L,K[n-2])+\frac{1-p}{n(n-p)}\int_{S^{n-1}}\frac{h_L^2}{h_K}dS_K.

This local inequality is equivalent to the LpL^p-Brunn-Minkowski inequality for p∈[0,1)p\in[0,1). The corresponding conjecture was confirmed in that range, while the displayed assertion for all p≥0p\geq0 is not established in general.

References

Primary source

Luca Iffland, “The local logarithmic Brunn-Minkowski inequality for bodies of revolution”, arXiv:2602.17912 (2026).

Additional references

2 papers in this index state this conjecture (2017–2026). The statement above is taken from the most recent of them; the others are arXiv:1711.01089.

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