Novik–Zheng affine-stress support conjecture for simplicial spheres

Let 2id/22\leq i\leq d/2. Let Δ\Delta be either the boundary complex of a simplicial dd-polytope with its natural embedding pp, or a simplicial (d1)(d-1)-sphere with a generic embedding pp. Assume that Δ\Delta has no missing faces of dimension at least di+1d-i+1. The affine-stress support conjecture. Every (i1)(i-1)-face of Δ\Delta participates in some affine ii-stress on (Δ,p)(\Delta,p). In particular, the space of affine ii-stresses of (Δ,p)(\Delta,p) determines the (i1)(i-1)-skeleton of Δ\Delta. The i=2i=2 case is known by the cited results, but all other cases remain wide open.

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Primary source

Satoshi Murai, Isabella Novik and Hailun Zheng, “Affine stresses, inverse systems, and reconstruction problems”, arXiv:2306.09816 (2023).

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