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Classifying $t$-structures via ICE-closed subcategories and a lattice of torsion classes
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abstract
In a triangulated category equipped with a $t$-structure, we investigate a relation between ICE-closed (=Image-Cokernel-Extension-closed) subcategories of the heart of the $t$-structure and aisles in the triangulated categories. We introduce an ICE sequence, a sequence of ICE-closed subcategories satisfying a certain condition, and establish a bijection between ICE sequences and homology-determined preaisles. Moreover we give a sufficient condition that an ICE sequence induces a $t$-structure via the bijection. In the case of the bounded derived category $D^b({\mathsf{mod}}\Lambda)$ of a $\tau$-tilting finite algebra $\Lambda$, we give a description of ICE sequences in ${\mathsf{mod}}\Lambda$ which induce bounded $t$-structures on $D^b({\mathsf{mod}}\Lambda)$ from the viewpoint of a lattice consisting of torsion classes in ${\mathsf{mod}}\Lambda$.
Forward citations
Cited by 2 Pith papers
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Telescope conjecture for t-structures over noetherian path algebras
Homotopically smashing t-structures over noetherian Dynkin path algebras are compactly generated, with a full classification by poset morphisms from Spec(R) to Filt(Nc(Q)).
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ICE-closed subcategories and epibricks over recollements
Over a recollement of abelian categories, ICE-closed subcategories, epibricks and monobricks glue and reduce along the recollement, yielding a bijection for ICE-closed subcategories under a natural containment condition.
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