Results 11 to 20 of about 317,331 (198)

Derived Kan extension for strict polynomial functors [PDF]

open access: greenarXiv, 2011
We investigate fundamental properties of adjoint functors to the precomposition functor in the category of strict polynomial functors.
Marcin Chałupnik
arxiv   +3 more sources

Derived Functors of Torsion [PDF]

open access: bronzeCanadian Mathematical Bulletin, 1976
AbstractIn this note we compute the derived functors of “torsion submodule” using a certain duality result for semi-exact functors on an abelian category of finite global dimension.
Howard L. Hiller
openalex   +3 more sources

The spectrum of derived Mackey functors [PDF]

open access: greenTransactions of the American Mathematical Society, 2020
We compute the spectrum of the category of derived Mackey functors (in the sense of Kaledin) for all finite groups. We find that this space captures precisely the top and bottom layers (i.e. the height infinity and height zero parts) of the spectrum of the equivariant stable homotopy category. Due to this truncation of the chromatic information, we are
Irakli Patchkoria   +2 more
openalex   +7 more sources

Derived Functors of Differential Operators [PDF]

open access: greenInternational Mathematics Research Notices, 2017
Abstract In their work on differential operators in positive characteristic, Smith and Van den Bergh define and study the derived functors of differential operators; these arise naturally as obstructions to differential operators reducing to positive characteristic.
Jack Jeffries
openalex   +5 more sources

On derived categories and derived functors

open access: green, 2007
For an abelian category, a category equivalent to its derived category is constructed by means of specific projective (injective) multicomplexes, the so-called homological resolutions.
Samson Saneblidze
openalex   +5 more sources

Derived functors and Hilbert polynomials [PDF]

open access: greenMathematical Proceedings of the Cambridge Philosophical Society, 2002
Let R be a commutative Noetherian ring, I an ideal, M and N finitely generated R-modules. Assume V(I) [xcap ] Supp (M) [xcap ] Supp (N) consists of finitely many maximal ideals and let λ(Exti(N/InN, M)) denote the length of Exti(N/InN, M). It is shown that λ(Exti(N/InN, M)) agrees with a polynomial in n for n [Gt ] 0, and an upper bound ...
Emanoil Theodorescu
openalex   +4 more sources

Derived Mackey functors

open access: greenMoscow Mathematical Journal, 2008
For a finite group $G$, the so-called $G$-Mackey functors form an abelian category $M(G)$ that has many applications in the study of $G$-equivariant stable homotopy. One would expect that the derived category $D(M(G))$ would be similarly important as the "homological" counterpart of the $G$-equivariant stable homotopy category.
D. Kaledin
openalex   +5 more sources

Biset functors as module Mackey functors, and its relation to derivators [PDF]

open access: yesarXiv, 2016
In this article, we will show that the category of biset functors can be regarded as a reflective monoidal subcategory of the category of Mackey functors on the 2-category of finite groupoids. This reflective subcategory is equivalent to the category of modules over the Burnside functor.
arxiv   +5 more sources

Group derived functors

open access: bronzeJournal of Algebra, 1968
John L. MacDonald
openalex   +3 more sources

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