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Precise statement
Ehrhart conjectured that a full-dimensional compact convex body in $\mathbb{R}^n$ whose barycenter is its unique interior lattice point has volume at most $(n+1)^n/n!$. With the inequality itself settled, the remaining question was which bodies attain it. Every such body is a unimodular image of the simplex $(n+1)\Delta_n - (1,\dots,1)$.
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fidelity, correctness, priority, or novelty.
What AI did
GPT-5.6 Sol, Fable 5, Danus
The paper states the main result was obtained by generative AI, naming GPT-5.6-sol, Fable 5 and the Danus system, and its comment records essential human strategic input followed by human verification.