By Claire Amiot (auth.), Aslak Bakke Buan, Idun Reiten, Øyvind Solberg (eds.)

ISBN-10: 3642394841

ISBN-13: 9783642394843

ISBN-10: 364239485X

ISBN-13: 9783642394850

This ebook good points survey and examine papers from The Abel Symposium 2011: Algebras, quivers and representations, held in Balestrand, Norway 2011. It examines a truly energetic study region that has had a transforming into impact and profound impression in lots of different components of arithmetic like, commutative algebra, algebraic geometry, algebraic teams and combinatorics. This quantity illustrates and extends such connections with algebraic geometry, cluster algebra concept, commutative algebra, dynamical platforms and triangulated different types. moreover, it contains contributions on additional advancements in illustration idea of quivers and algebras.

Algebras, Quivers and Representations is concentrated at researchers and graduate scholars in algebra, illustration thought and triangulate categories.

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Extra info for Algebras, Quivers and Representations: The Abel Symposium 2011

Example text

In case H(B) 0 = 0, respectively, H(B) 0 = 0 we also consider: The subcategory Dha (B) of those L with H(L) 0 = 0, respectively, H(L) 0 = 0. hf hf hf We set Dhf ha (B) = D (B) ∩ Dha (B) and Dhb (B) = D (B) ∩ Dhb (B). In case B 0 = 0, respectively, B 0 = 0 we also consider: The subcategory Da (B) of those L with L 0 = 0, respectively, L 0 = 0. We set Dfa (B) = Df (B) ∩ Da (B) and Dfb (B) = Df (B) ∩ Db (B). Recall that an additive functor between triangulated categories is said to be exact if it commutes with exact triangles and with shifts.

Due to the definition of the action of C ∗ in Sect. 2(3) and Sect. 4. Morphisms of DG modules are the degree zero cycles in the complex of homomorphisms, so we get HomMfa (C ∗ ) C ∗ ⊗ τ ∗ M ∗ , L ∼ = HomMfa (A) A ⊗ τ L∗ , M The space on the right is HomMfa (A)op (M, A ⊗τ L∗ ), whence the desired assertion. 1 Let M be a DG module in Mfa (A). 6. ∗ : Dfa (A)op → Dfa (C ∗ ). ∗ ) in the opposite direction is similarly obtained. These functors form an adjoint pair because they are induced by such a pair.

1 Let A be an augmented DG algebra and C a coaugmented DG coalgebra such that A := Ker(ε A ) and C := Ker(ε C ) satisfy the conditions (p) A 0 =0=C 1 respectively (n) A −1 =0=C 0 A twisting map τ : C → A is acyclic if (respectively, only if) the maps described in one (respectively, in all) of the following items are quasi-isomorphisms. (i) ε ACM : A ⊗ τ C τ ⊗ M → M from (19) for all left DG modules M. (ii) ε AC : A ⊗ τ C → k from (25). (iii) γ τ : C → BA from Sect. 2). (iv) ηCAX : X → C τ ⊗ A ⊗ τ X from (20) for all left DG comodules X.

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Algebras, Quivers and Representations: The Abel Symposium 2011 by Claire Amiot (auth.), Aslak Bakke Buan, Idun Reiten, Øyvind Solberg (eds.)


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