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polytope frameworks 1rigidity theory 1Schläfli formula 1second-order rigidity 1stress analysis 1

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1 paper

math.MG2026

Second-order rigidity of coned polytope frameworks and the stress-flex conjecture from a vector-valued Schläfli formula

Eleni Pachyli, Roman Prosanov, Martin Winter

The paper proves that coned polytope frameworks are second‑order rigid by introducing the Wachspress stress and resolving the stress‑flex conjecture using a discrete‑geometric vers…