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We give some remarks on limit mixed Hodge structure and spectrum. These are more or less well-known to the specialists, and do not seem to be stated explicitly in the literature. However, they do not seem to be completely trivial to the…

Algebraic Geometry · Mathematics 2012-10-16 Alexandru Dimca , Morihiko Saito

The modular curves serve as excellent objects for testing conjectures in arithmetic geometry. They possess a natural geometric definition in contrast with rather nontrivial structure. On the other hand, they are well-studied from the…

Algebraic Geometry · Mathematics 2025-01-14 A. Levin , N. Sakharova

We calculate the mixed Hodge numbers of smooth 3-dimensional cluster varieties and show that they are of mixed Tate type. We also study the mixed Hodge structures of the cohomology and intersection cohomology groups of some singular cluster…

Algebraic Geometry · Mathematics 2025-08-20 Yuhang Zhang , Zili Zhang

We give a cohomological and geometrical interpretation for the weighted Ehrhart theory of a full-dimensional lattice polytope $P$, with Laurent polynomial weights of geometric origin. For this purpose, we calculate the motivic Chern and…

Algebraic Geometry · Mathematics 2024-05-08 Laurentiu Maxim , Jörg Schürmann

We define and construct mixed Hodge structures on real schematic homotopy types of complex quasi-projective varieties, giving mixed Hodge structures on their homotopy groups and pro-algebraic fundamental groups. We also show that these…

Algebraic Geometry · Mathematics 2016-05-13 J. P. Pridham

Let S be a connected scheme smooth and of finite type over the field of complex numbers. To every 1-motive over S, Andr\'e associated the enriched Hodge realization given by a torsion-free, graded-polarizable and admissible variation of…

Algebraic Geometry · Mathematics 2026-05-28 Cristiana Bertolin

We use mixed Hodge theory to show that the functor of singular chains with rational coefficients is formal as a lax symmetric monoidal functor, when restricted to complex schemes whose weight filtration in cohomology satisfies a certain…

Algebraic Topology · Mathematics 2022-10-27 Joana Cirici , Geoffroy Horel

The Hodge-Tate spectral sequence for a proper smooth variety over a p-adic field provides a framework for us to revisit Faltings' approach to p-adic Hodge theory and to fill in many details. The spectral sequence is obtained from the…

Algebraic Geometry · Mathematics 2015-09-14 Ahmed Abbes , Michel Gros

We consider mixed Hodge module structures on GKZ-hypergeometric differential systems. We show that the Hodge filtration on these D-modules is given by the order filtration, up to suitable shift. As an application, we prove a conjecture on…

Algebraic Geometry · Mathematics 2020-04-16 Thomas Reichelt , Christian Sevenheck

We give a rather informal introduction to the theory of mixed Hodge modules for young mathematicians.

Algebraic Geometry · Mathematics 2016-06-29 Morihiko Saito

We present a conjecture on the geometry of the Hodge locus of a (graded polarizable, admissible) variation of mixed Hodge structure over a complex smooth quasi-projective base, generalizing to this context the Zilber-Pink Conjecture for…

Algebraic Geometry · Mathematics 2017-11-28 Bruno Klingler

This paper is an expanded version of a talk given at the Current Developments in Mathematics Conference last November (2002) on the work of Wilfred Schmid on periods of limits of Hodge structures. The paper begins with an exposition of the…

Algebraic Geometry · Mathematics 2016-09-07 Richard Hain

This text gives a construction of a differential graded Lie algebra in Nori's category of effective homological motives. In fact the construction works in more a general setting than that of an Abelian category. This allows us to give the…

Algebraic Geometry · Mathematics 2007-05-23 Kaj Gartz

We explain some fundamental differences between the theories of mixed Hodge modules and mixed twistor modules (including the difference in weight system on the nearby cycle functor) which do not seem to be clarified explicitly in the…

Algebraic Geometry · Mathematics 2016-11-04 Morihiko Saito

We compute the mixed Hodge structure on the cohomology ring of complements of complex coordinate subspace arrangements. The mixed Hodge structure can be described in terms of the special bigrading on the cohomology ring of complements of…

Algebraic Geometry · Mathematics 2017-04-21 Yury V. Eliyashev

We show that the Fourier-Laplace transform of a regular holonomic module over the Weyl algebra of one variable, which generically underlies a variation of polarized Hodge structure, underlies itself an integrable variation of polarized…

Algebraic Geometry · Mathematics 2011-01-04 Claude Sabbah

For a smooth, projective complex variety, we introduce several mixed Hodge structures associated to higher algebraic cycles. Most notably, we introduce a mixed Hodge structure for a pair of higher cycles which are in the refined normalized…

Algebraic Geometry · Mathematics 2022-05-31 J. I. Burgos Gil , S. Goswami , G. Pearlstein

We study the local cohomology modules for the secant variety of lines of a smooth projective variety $Y$ and for higher secant varieties of smooth projective curves. We show that the local cohomological defect in the first case is related…

Algebraic Geometry · Mathematics 2026-02-05 Qianyu Chen , Bradley Dirks , Sebastian Olano , Debaditya Raychaudhury

This proceedings note introduces aspects of the authors' work relating mirror symmetry and integral variations of Hodge structure. The emphasis is on their classification of the integral variations of Hodge structure which can underly…

Algebraic Geometry · Mathematics 2007-05-23 Charles F. Doran , John W. Morgan

We give some details of a simpler definition of mixed Hodge modules which has been announced in some papers. Compared with earlier arguments, this new definition is simplified by using Beilinson's maximal extension together with stability…

Algebraic Geometry · Mathematics 2013-07-24 Morihiko Saito