Generic projective rigidity conjecture for convex polytopes

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Let P⊂RdP\subset\mathbb{R}^d be a convex polytope of dimension d≥3d\geq 3. A projective transformation is generic when it avoids the exceptional algebraic conditions relevant to the rigidity property. Generic projective rigidity conjecture. A generic projective transformation of PP is (first-order) rigid. This proposed approach is motivated by the fact that the known flexible polytopes have parallel edges, whereas a generic projective transformation has no parallel edges. Whether this implication yields rigidity in all dimensions is not established in the paper.

References

Primary source

Matthias Himmelmann, Bernd Schulze and Martin Winter, “Rigidity of polytopes with edge length and coplanarity constraints”, arXiv:2505.00874 (2026).

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