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automorphism groups 1flexible varieties 1makar-limanov invariant 1maximal tori 1trinomial varieties 1zariski cancellation 1

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math.AG2026

Non-cancellative varieties, maximal tori, and the Makar-Limanov invariant

Sergey Gaifullin, Mikhail Petrov

The paper constructs new counterexamples to the generalized Zariski cancellation problem and shows that the cylinders over these varieties have infinitely many non‑conjugate maxima…