WebK(A) the homotopy category of chain complexes in A. The derived category of A, usually denoted by D(A), is the category obtained from K(A) by inverting quasi … WebDec 9, 2024 · 1. Consider the "pyramid" (commutative up to homotopy) above the sequence of the derived category X → Y → X → Y (I'm seeing this as the row which is at the …

[1203.0276] The derived category of a GIT quotient - arXiv.org

Webbecome true in the language of derived categories and functors. 2 Outline of the Chapter The machinery needed to deflne a derived category in full generality tends to obscure the simplicity of the phenomena. We therefore start in section 3 with the example of the derived category of a module category. Webthe category of complexes and the derived category. We now obtain a second, equivalent, de nition [82] of the derived category DA: it is the category of fractions of the homotopy category with respect to the class of quasi-isomorphisms. This means that the derived category has the same objects as the homotopy category fiber reflectometer

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Webinherits a triangulated structure from the derived category Db(modA): For an additive category A, the category of m periodic complexes C m(A), together with the relative homotopy category K m(A) and its derived category D m(A) in case that Ais Date: April 12, 2024. 2024 Mathematics Subject Classi cation. 16G70, 16G20, 16E10. Key words and … WebMay 10, 2024 · Derived category. The notion of a derived category has been introduced by J.-L. Verdier in his 1963 notes [a7]. This facilitated a proof of a duality theorem of A. Grothendieck (cf. [a5] ). Let $ {\mathcal C} $ be an additive category equipped with an … WebOrlov studied the derived category and the category of singularities of such an algebras in great detail in [21], and much of the technique of the proof of Theorem 1.1 derives from that paper. In the context of equivariant K ahler geometry, one can consider Theorem 1.1 as a categori- cation of Kirwan surjectivity. fiber reflector