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arxiv: 1507.02811 · v2 · pith:KGO7347Onew · submitted 2015-07-10 · 🧮 math.AC · math.CT· math.RA· math.RT

One-tilting classes and modules over commutative rings

classification 🧮 math.AC math.CTmath.RAmath.RT
keywords modulestiltingclassesclassifycommutativeringarbitraryarise
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We classify 1-tilting classes over an arbitrary commutative ring. As a consequence, we classify all resolving subcategories of finitely presented modules of projective dimension at most 1. Both these collections are in 1-1 correspondence with faithful Gabriel topologies of finite type, or equivalently, with Thomason subsets of the spectrum avoiding a set of primes associated in a specific way to the ring. We also provide a generalization of the classical Fuchs and Salce tilting modules, and classify the equivalence classes of all 1-tilting modules. Finally we characterize the cases when tilting modules arise from perfect localizations.

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