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Stability Conditions and Harder-Narasimhan Filtrations for Triangulated Categories (2512.21546v1)
Published 25 Dec 2025 in math.RT
Abstract: In this paper, we investigate the relationships between Harder-Narasimhan filtrations and derived Hall algebras. We extend several results from abelian categories to triangulated categories, including Reineke inversions, wall-crossing formulas, and Joyce's elements $ε_γ$. The results in triangulated categories can be summarized via a diagram of the same form of that in abelian categories. As an application, we characterize all possibilities for stability conditions on $Db(\mathrm{rep} A_2)$.
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