Folklore eventual monotonicity conjecture for alpha-invariants

From papers

Let XX be a projective manifold and let LL be an ample line bundle on XX. For each positive integer kk, let αk(L)\alpha_k(L) denote the level kk log canonical threshold. The sequence (αk(L))k1(\alpha_k(L))_{k\geq1} is the sequence of quantized alpha-invariants.

Folklore monotonicity conjecture. There exists k0N+k_0\in\mathbb{N}_+ such that, whenever k0k1k2k_0\leq k_1\leq k_2,

αk1(L)αk2(L).\alpha_{k_1}(L)\geq\alpha_{k_2}(L).

This weaker folklore conjecture predicts that the quantized alpha-invariants are eventually monotone. The paper states that it also provides a counterexample to this conjecture, so it is refuted.

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Sources & referencesView supporting material

Primary source

Chenzi Jin, “A counterexample to Tian's Stabilization Conjecture”, arXiv:2412.02683 (2024).

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