Kalai's 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, or more generally a normal (d1)(d-1)-pseudomanifold without boundary, with a generic embedding pp. Assume that Δ\Delta has no missing faces of dimension at least di+1d-i+1.

Kalai's 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 determines the (i1)(i-1)-skeleton of Δ\Delta.

For generic embeddings, the preceding result for affine 22-stresses motivates this higher-dimensional support conjecture. Its general case is left open in the source.

Sources & referencesView supporting material

Primary source

Isabella Novik and Hailun Zheng, “Affine stresses: the partition of unity and Kalai's reconstruction conjectures”, arXiv:2208.06693 (2024).

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