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Related papers: On weight truncations in the motivic setting

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Derived equivalences and t-structures are closely related. We use realisation functors associated to t-structures in triangulated categories to establish a derived Morita theory for abelian categories with a projective generator or an…

Representation Theory · Mathematics 2017-07-26 Chrysostomos Psaroudakis , Jorge Vitória

We link smooth Artin motives to \'etale local systems and Artin representations. We then construct the ordinary motivic t-structure on Artin motives with integral coefficients and show that the $\ell$-adic realization functor is t-exact.

Algebraic Geometry · Mathematics 2025-04-23 Raphaël Ruimy

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…

Algebraic Geometry · Mathematics 2025-04-22 Dhyan Aranha , Chirantan Chowdhury

We prove several K\"unneth formulas in motivic homotopy categories and deduce a Verdier pairing in these categories following SGA5, which leads to the characteristic class of a constructible motive, an invariant closely related to the…

Algebraic Geometry · Mathematics 2021-01-20 Fangzhou Jin , Enlin Yang

This is a considerably expanded version of the "pure" part of our 2002 preprint. We define a category of pure birational motives over a field, depending on the choice of an adequate equivalence relation on algebraic cycles. It is obtained…

Algebraic Geometry · Mathematics 2016-08-31 Bruno Kahn , R. Sujatha

In this paper we consider a construction in an arbitrary triangulated category T which resembles the notion of a Moore spectrum in algebraic topology. Namely, given a compact object C of T satisfying some finite tilting assumptions, we…

Category Theory · Mathematics 2010-06-03 David Pauksztello

The main objective of this paper is to give a summary of our recent work on recursion formulae for intersection numbers on moduli spaces of curves and their applications. We also present a conjectural relation between tautological rings and…

Algebraic Geometry · Mathematics 2011-03-24 Kefeng Liu , Hao Xu

By defining and studying functorial properties of the Borel-Moore motivic homology, we identify the heart of Bondarko-H\'ebert's weight structure on Beilinson motives with Corti-Hanamura's category of Chow motives over a base, therefore…

Algebraic Geometry · Mathematics 2020-10-20 Fangzhou Jin

We introduce a new algebraic-cycle model for the motivic cohomology theory of truncated polynomials $k[t]/(t^m)$ in one variable. This approach uses ideas from the deformation theory and non-archimedean analysis, and is distinct from the…

Algebraic Geometry · Mathematics 2018-07-16 Jinhyun Park , Sinan Ünver

We show that representations of convolution algebras such as Lustzig's graded affine Hecke algebra or the quiver Hecke algebra and quiver Schur algebra in (affine) type A can be realised in terms of certain equivariant motivic sheaves…

Representation Theory · Mathematics 2021-11-16 Jens Niklas Eberhardt , Catharina Stroppel

We develop a combinatorial model of the associated Hermite polynomials and their moments, and prove their orthogonality with a sign-reversing involution. We find combinatorial interpretations of the moments as complete matchings, connected…

Combinatorics · Mathematics 2009-03-05 Dan Drake

We study "canonical weight decompositions" slightly generalizing that defined by J. Wildeshaus. For an triangulated category $C$, any integer $n$, and a weight structure $w$ on $C$ a triangle $LM\to M\to RM\to LM[1]$, where $LM$ is of…

K-Theory and Homology · Mathematics 2021-07-27 Mikhail V. Bondarko

We develop a notion of exponential motives on general prestacks equipped with a $\mathbf{G}_a$-action, and compare them with Whittaker motives via Gaitsgory's Kirillov model. We then establish foundational results for exponential motives on…

Algebraic Geometry · Mathematics 2026-03-25 Robert Cass , Thibaud van den Hove , Jakob Scholbach

We introduce a notion of gluability for poset-indexed Bridgeland slicings on triangulated categories and show how a gluing abelian slicing on the heart of a bounded $t$-structure naturally induces a family of perverse $t$-structures. Our…

Category Theory · Mathematics 2018-06-05 Giovanni Luca Marchetti , Domenico Fiorenza

This paper has been withdrawn and replaced by arXiv:1309.5035. In this paper we describe some examples of so called spherical functors between triangulated categories, which generalize the notion of a spherical object. We also give…

Category Theory · Mathematics 2013-09-26 Rina Anno

Let D be a central simple algebra of prime degree over a field and let E be an SL_1(D)-torsor. We determine the complete motivic decomposition of certain compactifications of E. We also compute the Chow ring of E.

Algebraic Geometry · Mathematics 2014-02-25 Nikita A. Karpenko , Alexander S. Merkurjev

Let F be a global function field with constant field $\mathbb{F}_q$. Let G be a reductive group over $\mathbb{F}_q$. We establish a variant of Arthur's truncated kernel for G and for its Lie algebra which generalizes Arthur's original…

Number Theory · Mathematics 2023-03-08 Hongjie Yu

We study various triangulated motivic categories and introduce a vast family of aisles (these are certain classes of objects) in them. These aisles are defined in terms of the corresponding "motives" (or motivic spectra) of smooth varieties…

Algebraic Geometry · Mathematics 2021-06-04 Mikhail V. Bondarko , David Z. Kumallagov

In this paper, we construct a monoidal weight structure on the stable $\infty$-category of rigid analytic motives over a local field $K$ via Galois descent. This extends the weight structure on the full subcategory of rigid analytic motives…

Algebraic Geometry · Mathematics 2025-09-23 Kaixing Cao

In this paper, we use lax monoidal TQFTs as an effective computational method for motivic classes of representation varieties. In particular, we perform the calculation for parabolic $\mathrm{SL}_2(\mathbb{C})$-representation varieties over…

Algebraic Geometry · Mathematics 2019-08-01 Ángel González-Prieto
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