Kleinian singularities, derived categories and Hall algebras
β Scribed by M. Kapranov; E. Vasserot
- Publisher
- Springer
- Year
- 2000
- Tongue
- English
- Weight
- 97 KB
- Volume
- 316
- Category
- Article
- ISSN
- 0025-5831
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π SIMILAR VOLUMES
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
The concept and some basic properties of a twisted Hopf algebra are introduced and investigated. Its unique difference from a Hopf algebra is that the comultiplication β¦ : A Βͺ A m A is an algebra homomorphism, not for the componentwise multiplication on A m A, but for the twisted multiplication on A