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We introduce the notion of tensor t-structures on the bounded derived categories of schemes. For a Noetherian scheme $X$ admitting a dualizing complex, Bezrukavnikov-Deligne, and then independently Gabber and Kashiwara have shown that given…

代数几何 · 数学 2024-12-25 Gopinath Sahoo

We construct the Chow weight structure on the derived category of geometric motives with arbitrary coefficients for X a finite type scheme over a field characteristic 0 and G an affine algebraic group. In particular we also show that the…

代数几何 · 数学 2025-04-22 Dhyan Aranha , Chirantan Chowdhury

Highest weight categories are described in terms of standard objects and recollements of abelian categories, working over an arbitrary commutative base ring. Then the highest weight structure for categories of strict polynomial functors is…

表示论 · 数学 2015-12-23 Henning Krause

We study t-structures generated by sets of objects which satisfy a condition weaker than the compactness. We also study weight structures cogenerated by sets of objects satisfying the dual condition. Under some appropriate hypothesis, it…

范畴论 · 数学 2020-02-05 George Ciprian Modoi

As we proved earlier, for a triangulated category $\underline{C}$ endowed with a weight structure $w$ and a triangulated subcategory $\underline{D}$ of $\underline{C}$ (strongly) generated by cones of a set of morphisms $S$ in the heart…

K理论与同调 · 数学 2018-12-31 Mikhail Bondarko , Vladimir Sosnilo

We define exact weights on a triangulated category to be nonnegative functions on objects satisfying a subadditivity condition with respect to exact triangles. Such weights induce a metric on objects in the triangulated category, which we…

范畴论 · 数学 2025-02-06 Peter Bubenik , Jose A. Velez-Marulanda

We construct and study a candidate for the standard motivic t-structure on the triangulated category of relative cohomological 1-motives with rational coefficients over a noetherian finite dimensional scheme S. This t-structure is defined…

代数几何 · 数学 2019-02-14 Simon Pepin Lehalleur

We describe a new method for constructing a weight structure $w$ on a triangulated category $C$. For a given $C$ and $w$ it allow us to give a fairly comprehensive (and new) description of those triangulated categories consisting of…

K理论与同调 · 数学 2017-01-24 Mikhail V. Bondarko , Vladimir A. Sosnilo

For every stable model category $\mathcal{M}$ with a certain extra structure, we produce an associated model structure on the pro-category pro-$\mathcal{M}$ and a spectral sequence, analogous to the Atiyah-Hirzebruch spectral sequence, with…

代数拓扑 · 数学 2007-05-23 Halvard Fausk , Daniel C. Isaksen

In this note we prove that additive categories that occur as hearts of weight structures are precisely the weakly idempotent completecategories, that is, the categories where all split monomorphisms give direct sum decompositions. We also…

范畴论 · 数学 2020-05-26 Mikhail V. Bondarko , Sergei V. Vostokov

This paper is dedicated to the study of smashing weight structures (one may say that these are weight structures "coherent with arbitrary coproducts"), and the application of their properties to $t$-structures. In particular, we prove that…

K理论与同调 · 数学 2021-03-02 Mikhail V. Bondarko

Considering a (co)homology theory $\mathbb{T}$ on a base category $\mathcal{C}$ as a fragment of a first-order logical theory we here construct an abelian category $\mathcal{A}[\mathbb{T}]$ which is universal with respect to models of…

代数几何 · 数学 2018-04-16 L. Barbieri-Viale

We give a classification theorem for a relevant class of $t$-structures in triangulated categories, which includes in the case of the derived category of a Grothendieck category, the $t$-structures whose hearts have at most $n$ fixed…

表示论 · 数学 2014-12-31 Luisa Fiorot , Francesco Mattiello , Alberto Tonolo

Let k be an algebraically closed field. Using the Eilenberg-Watts theorem over schemes, we determine the structure of k-linear right exact direct limit and coherence preserving functors from the category of quasi-coherent sheaves on P^1_k…

代数几何 · 数学 2011-11-14 Adam Nyman

In the article [GS96], Gillet and Soul\'e define a weight complex on the category of Voevodsky motives over a field of characteristic 0. In [Bon07], Bondarko generalizes this construction for any f-category with a bounded weight structure,…

代数几何 · 数学 2010-10-27 David Hébert

We construct a co-$t$-structure on the derived category of coherent sheaves on the nilpotent cone $\mathcal{N}$ of a reductive group, as well as on the derived category of coherent sheaves on any parabolic Springer resolution. These…

表示论 · 数学 2023-04-26 Pramod N. Achar , William Hardesty

To an arbitrary variety over a field of characteristic zero, we associate a complex of Chow motives, which is, up to homotopy, unique and bounded. We deduce that any variety has a natural Euler characteristic in the Grothendieck group of…

alg-geom · 数学 2008-02-03 Henri Gillet , Christophe Soule

We show that $\kgl$-linear cohomology theories over an affine Dedekind scheme $S$ admit a canonical weight filtration on resolvable motives without inverting residual characteristics. Combined with upcoming work of Annala--Hoyois--Iwasa,…

K理论与同调 · 数学 2025-10-03 Toni Annala , Piotr Pstrągowski

The multipullback quantization of complex projective spaces lacks the naive quantum CW-complex structure because the quantization of an embedding of the $n$-skeleton into the $(n+1)$-skeleton does not exist. To overcome this difficulty, we…

K理论与同调 · 数学 2022-01-03 Francesco D'Andrea , Piotr M. Hajac , Tomasz Maszczyk , Albert Sheu , Bartosz Zielinski

We give a condition which characterises those weight structures on a derived category which come from a Thomason filtration on the underlying scheme. Weight structures satisfying our condition will be called $\otimes ^c$-weight structures.…

代数几何 · 数学 2022-11-07 Umesh V Dubey , Gopinath Sahoo