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For an embedding of sufficiently high degree of a smooth projective variety X into projective space, we use residues to define a filtered holonomic D-module (M, F) on the dual projective space. This gives a concrete description of the…

Algebraic Geometry · Mathematics 2010-05-05 Christian Schnell

In this book we construct fundamental filtered complexes in filtered derived categories. These are generalizations of a filtered complex constructed by Mokrane. As an application of these constructions, we develop theory of limits of weight…

Algebraic Geometry · Mathematics 2020-10-16 Yukiyoshi Nakkajima

We study a natural Hodge module on the Hilbert scheme of four points on affine three-space, which categorifies the Donaldson--Thomas invariant of the Hilbert scheme. We determine the weight filtration on the Hodge module explicitly in terms…

Algebraic Geometry · Mathematics 2009-04-17 Alexandru Dimca , Balazs Szendroi

We give some relations between the weights and the prime $p$ of elements of the mod $p$ kernel of the generalized theta operator $\Theta ^{[j]}$. In order to construct examples of the mod $p$ kernel of $\Theta ^{[j]}$ from any modular form,…

Number Theory · Mathematics 2016-06-22 Siegfried Boecherer , Toshiyuki Kikuta , Sho Takemori

The purpose of this work is to geometrize the notion of mixed Hodge structure. Therefore, we associate equivariant vector bundles on the projective plane to trifiltered vector spaces. Making this Rees construction with filtrations arising…

Algebraic Geometry · Mathematics 2007-05-23 Olivier Penacchio

We recall first some basic facts on weighted homogeneous functions and filtrations in the ring $A$ of formal power series. We introduce next their analogues for weighted homogeneous diffeomorphisms and vector fields. We show that the Milnor…

Algebraic Geometry · Mathematics 2019-04-09 Imran Ahmed

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-Theory and Homology · Mathematics 2025-10-03 Toni Annala , Piotr Pstrągowski

We show that in the category of complex algebraic varieties, the Eilenberg--Moore spectral sequence can be endowed with a weight filtration. This implies that it degenerates if all involved spaces have pure cohomology. As application, we…

Algebraic Geometry · Mathematics 2007-05-23 Matthias Franz , Andrzej Weber

Based on the logarithmic algebraic geometry and the theory of Deligne systems, we define an abelian category of $\ell$-adic sheaves with weight filtrations on a logarithmic scheme over a finite field, which is similar to the category of…

Algebraic Geometry · Mathematics 2024-05-01 Kazuya Kato , Chikara Nakayama , Sampei Usui

We construct Hodge filtered cohomology groups for complex manifolds that combine the topological information of generalized cohomology theories with geometric data of Hodge filtered holomorphic forms. This theory provides a natural…

Algebraic Topology · Mathematics 2017-05-17 Michael J. Hopkins , Gereon Quick

For a smooth complex projective variety X defined over a number field, we have filtrations on the Chow groups depending of the choice of realizations. If the realization consists of mixed Hodge structure without any additional structure, we…

Algebraic Geometry · Mathematics 2007-05-23 Morihiko Saito

We construct a functor from the triangulated category of Voevodsky motives to a certain derived category of mixed Hodge structures enriched with integral weight filtration. We use this construction to prove a strong integral version of the…

Algebraic Geometry · Mathematics 2011-12-13 Vadim Vologodsky

We describe locally the representation varieties of fundamental groups for smooth complex varieties at representations coming from the monodromy of a variation of mixed Hodge structure. Given such a manifold $X$ and such a linear…

Algebraic Geometry · Mathematics 2026-02-24 Louis-Clément Lefèvre

The purpose of this article is to investigate the properties of the category of mixed plectic Hodge structures defined by Nekov\'a\v{r} and Scholl. We give an equivalent description of mixed plectic Hodge structures in terms of the weight…

Algebraic Geometry · Mathematics 2020-10-30 Kenichi Bannai , Kei Hagihara , Shinichi Kobayashi , Kazuki Yamada , Shuji Yamamoto , Seidai Yasuda

We introduce and systematically study \emph{hierarchical filtrations} of vector bundles on smooth projective varieties. These are filtrations by saturated subsheaves of equal rank whose successive quotients are torsion sheaves supported in…

Algebraic Geometry · Mathematics 2026-01-01 Rahim Rahmati-asghar

We bound the generation level of the Hodge filtration on the localization along a hypersurface in terms of its minimal exponent. As a consequence, we obtain a local vanishing theorem for sheaves of forms with log poles. These results are…

Algebraic Geometry · Mathematics 2020-04-22 Mircea Mustata , Mihnea Popa

In this paper, we prove a Beilinson-type formula for the V-filtration of Kashiwara and Malgrange on a complex mixed Hodge module, using Hodge filtrations on the localization. Our formula expresses the V-filtration as the filtered D-module…

Algebraic Geometry · Mathematics 2026-02-12 Dougal Davis , Ruijie Yang

For a smooth algebraic variety $X$, a monodromic $D$-module on $X\times \mathbb{C}$ is decomposed into a direct sum of some $D$-modules on $X$. We show that the Hodge filtration of a mixed Hodge module on $X\times \mathbb{C}$ whose…

Algebraic Geometry · Mathematics 2022-01-31 Takahiro Saito

We establish a formula for the weight multiplicities of Demazure modules (in particular for highest weight representations) of a complex connected algebraic group in terms of the geometry of its Langlands dual.

Representation Theory · Mathematics 2007-05-23 Bogdan Ion

We introduce \emph{hierarchical depth}, a new invariant of line bundles and divisors, defined via maximal chains of effective sub-line bundles. This notion gives rise to \emph{hierarchical filtrations}, refining the structure of the Picard…

Algebraic Geometry · Mathematics 2025-10-29 Rahim Rahmati-asghar