Derived categories, tilted algebras, and
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Liangang Peng; Youjun Tan
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Article
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2003
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Elsevier Science
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English
β 230 KB
Given a finite dimensional hereditary algebra Ξ over a finite field k, in the derived category D b (Ξ) we obtain some formulae on Hall numbers associated to triangles. Using them we prove that, for any tilted algebra Ξ of Ξ, there is an embedding of the twisted Ringel-Hall algebra of Ξ into the Drin