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arxiv: 1806.00078 · v3 · pith:IVKX7M4Xnew · submitted 2018-05-31 · 🧮 math.AC · math.KT

Compactly generated t-structures in the derived category of a commutative ring

classification 🧮 math.AC math.KT
keywords compactlygeneratedcommutativeringt-structurescategoryderivednoetherian
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We classify all compactly generated t-structures in the unbounded derived category of an arbitrary commutative ring, generalizing the result of [ATLJS10] for noetherian rings. More specifically, we establish a bijective correspondence between the compactly generated t-structures and infinite filtrations of the Zariski spectrum by Thomason subsets. Moreover, we show that in the case of a commutative noetherian ring, any bounded below homotopically smashing t-structure is compactly generated. As a consequence, all cosilting complexes are classified up to equivalence.

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