Relative quasi-convergence and compactification of the stability manifold

Let RR be a ring and let D\mathcal{D} be an RR-linear, smooth and proper category. A continuous path σ:[0,+)Stab(D/R)\sigma_\bullet:[0,+\infty)\rightarrow\operatorname{Stab}(\mathcal{D}/R) of locally constant stability conditions is relative quasi-convergent if, for every sSpecRs\in\operatorname{Spec} R, the corresponding path σs,\sigma_{s,\bullet} is quasi-convergent. Relative quasi-convergence conjecture. A relative quasi-convergent path induces an equivalence relation i\sim^i on D\mathcal{D} and a corresponding RR-linear semiorthogonal decomposition

D=D1,,Dm.\mathcal{D}=\langle\mathcal{D}_1,\dots,\mathcal{D}_m\rangle.

Moreover, the complex manifold Stab(D/R)\operatorname{Stab}(\mathcal{D}/R)^\circ admits a compactification AStab(D/R)\mathcal{A}\operatorname{Stab}(\mathcal{D}/R) by locally constant augmented stability conditions for which the quasi-convergent paths in Stab(D/R)\operatorname{Stab}(\mathcal{D}/R) are convergent. The conjecture proposes a relative version of the decomposition extracted from quasi-convergent paths in the absolute setting, together with a compactification by augmented stability conditions; the source notes that it is unclear whether additional constraints on relative quasi-convergence are required.

Sources & referencesView supporting material

Primary source

Ian Selvaggi, “Deformations of locally constant stability conditions and good moduli spaces”, arXiv:2603.29053 (2026).

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