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B. Totaro showed \cite{totaro} that the rational cohomology of configuration spaces of smooth complex projective varieties is isomorphic as an algebra to the $E_2$ term of the Leray spectral sequence corresponding to the open embedding of…

Algebraic Geometry · Mathematics 2020-08-26 A. G. Gorinov

For any formal group law, there is a formal affine Hecke algebra defined by Hoffnung, Malag\'on-L\'opez, Savage, and Zainoulline. Coming from this formal group law, there is also an oriented cohomology theory. We identify the formal affine…

Representation Theory · Mathematics 2015-01-28 Gufang Zhao , Changlong Zhong

In [Ann. of Math. 169 (2009)], Min Ru proved a second main theorem for algebraically nondegenerate holomorphic curves in complex projective varieties intersecting fixed hypersurface targets. In this paper, by introducing a new proof method…

Complex Variables · Mathematics 2018-11-13 Gerd Dethloff , Tran Van Tan

We combine Deligne's global invariant cycle theorem, and the algebraicity theorem of Cattani, Deligne and Kaplan, for the connected components of the locus of Hodge classes, to conclude that under simple assumptions these components are…

Algebraic Geometry · Mathematics 2007-05-23 Claire Voisin

In the first part of this paper, we consider, in the context of an arbitrary hyperplane arrangement, the map between compactly supported cohomology to the usual cohomology of a local system. A formula (i.e., an explicit algebraic de Rham…

Algebraic Geometry · Mathematics 2017-03-07 Prakash Belkale , Patrick Brosnan , Swarnava Mukhopadhyay

The purpose of this article is to give an interpretation of real projective structures and associated cohomology classes in terms of connections, sections, etc. satisfying elliptic partial differential equations in the spirit of Hodge…

Differential Geometry · Mathematics 2007-05-23 F. Labourie

A natural map from Lawson homology to Deligne cohomology groups for smooth complex projective varieties is constructed by using the Harvey-Lawson spark complexes. We also compare this to Abel-Jacobi type constructions by others.

Algebraic Geometry · Mathematics 2009-09-30 Wenchuan Hu

In this paper, we consider compatible Hom-Leibniz algebra where the Hom map twists the operations in the compatible system. We consider a suitably graded Lie algebra whose Maurer-Cartan elements characterize the structure of compatible…

Rings and Algebras · Mathematics 2024-05-13 Rinkila Bhutia , RB Yadav , Namita Behera

We survey recent developments in the study of Hodge theoretic aspects of Alexander-type invariants associated with smooth complex algebraic varieties.

Algebraic Geometry · Mathematics 2022-03-29 Eva Elduque , Christian Geske , Moisés Herradón Cueto , Laurenţiu Maxim , Botong Wang

We analyze the intersection properties of projective planes embedded in generalized Kummer fourfolds, with a view toward classifying the homology classes represented by these submanifolds.

Algebraic Geometry · Mathematics 2010-04-02 Brendan Hassett , Yuri Tschinkel

In this thesis we use the Beauville-Bogomolov decomposition to compute the LLV algebra of smooth projective complex varieties admitting a holomorphic symplectic form, generalizing known results from hyperk\"ahler and abelian varieties.…

Algebraic Geometry · Mathematics 2026-05-27 Dion Leijnse

Ideas from Hodge theory have found important applications in representation theory. We give a survey of joint work with Ben Elias which uncovers Hodge theoretic structure in the Hecke category ("Soergel bimodules"). We also outline…

Representation Theory · Mathematics 2016-10-21 Geordie Williamson

The purpose of this paper is to study deformation theory of Hom-associative algebra morphisms and Hom-Lie algebra morphisms. We introduce a suitable cohomology and discuss Infinitesimal deformations, equivalent deformations and…

Rings and Algebras · Mathematics 2017-10-23 Anja Arfa , Nizar Ben Fraj , Abdenacer Makhlouf

We give a systematic description of the cyclic cohomology theory of Hopf algebroids in terms of its associated category of modules. Then we introduce a dual cyclic homology theory by applying cyclic duality to the underlying cocyclic…

K-Theory and Homology · Mathematics 2010-06-01 Niels Kowalzig , Hessel Posthuma

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

This paper constructs the cohomology theory for grading-restricted vertex superalgebras, generalizing Yi-Zhi Huang's cohomology theory of grading-restricted vertex algebras. To simplify the discussion, motivate the construction, and make it…

Quantum Algebra · Mathematics 2025-10-22 Paul Johnson , Fei Qi

In the theory of configuration spaces, "splitting" usually refers to the phenomenon that the configuration spaces on a manifold and those on its punctured version are closely related cohomologically. We prove a splitting theorem that is…

Algebraic Geometry · Mathematics 2024-05-01 Yifeng Huang

We prove a filtered version of the Homotopy Transfer Theorem which gives an A-infinity algebra structure on any page of the spectral sequence associated to a filtered dg-algebra. We then develop various applications to the study of the…

Algebraic Topology · Mathematics 2022-10-19 Joana Cirici , Anna Sopena

We study a natural Hodge theoretic generalization of rational (or $\mathbb{Q}$-)homology manifolds through an invariant ${\rm HRH(Z)}$ where $Z$ is a complex algebraic variety. The defining property of this notion encodes the difference…

Algebraic Geometry · Mathematics 2025-01-27 Bradley Dirks , Sebastian Olano , Debaditya Raychaudhury

The Hodge-de Rham Theorem is introduced and discussed. This result has implications for the general study of several partial differential equations. Some propositions which have applications to the proof of this theorem are used to study…

Differential Geometry · Mathematics 2014-06-12 Paul Bracken