The manifold-with-corners conjecture for augmented stability conditions

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Let σ=⟨C∙∣σ∙⟩Σ\sigma = \langle \mathcal{C}_\bullet \mid \sigma_\bullet \rangle_\Sigma be an augmented stability condition on a smooth and proper stable dgdg-category C\mathcal{C} over a field. Suppose that for every pair of terminal vertices u,v∈Γ(Σ)u,v \in \Gamma(\Sigma) with C≤u⊆C≤v\mathcal{C}_{\leq u} \subseteq \mathcal{C}_{\leq v}, the inclusion functor admits either a right or a left adjoint. For σ\sigma-stable objects E1,…,En∈CE_1,\ldots,E_n \in \mathcal{C} whose classes v(Ei)v(E_i) form a basis for Λ⊗Q\Lambda \otimes \mathbb{Q}, let ℓ(−)(E1,…,En):AStab⁡→AnR\ell_{(-)}(E_1,\ldots,E_n): \mathcal{A}\operatorname{Stab} \to \mathcal{A}^{\mathbb{R}}_n be the log-central-charge map.

Manifold-with-corners conjecture. The map ℓ(−)(E1,…,En)\ell_{(-)}(E_1,\ldots,E_n) induces a homeomorphism from an open neighborhood of σ\sigma onto an open subset of AnR\mathcal{A}^{\mathbb{R}}_n.

This is the simple, local form of the conjecture that the space of augmented stability conditions has a manifold-with-corners structure. The paper proves the assertion at generic admissible points, while the corresponding statement at non-generic admissible boundary points remains open.

References

Primary source

Daniel Halpern-Leistner and Antonios-Alexandros Robotis, “The Space of augmented stability conditions”, arXiv:2501.00710 (2026).

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