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It is well known that the cup-product pairing on the complementary integral cohomology groups (modulo torsion) of a compact oriented manifold is unimodular. We prove a similar result for the $\ell$-adic cohomology groups of smooth algebraic…

Algebraic Geometry · Mathematics 2021-07-06 Yuri G. Zarhin

In this paper we present a new approach to Grothendieck duality over commutative rings. Our approach is based on the idea of rigid dualizing complexes, which was introduced by Van den Bergh in the context of noncommutative algebraic…

Algebraic Geometry · Mathematics 2007-08-07 Amnon Yekutieli , James J. Zhang

In this paper we introduce a new subspace of Jacobi forms of higher degree via certain relations among Fourier coefficients. We prove that this space can also be characterized by duality properties of certain distinguished embedded Hecke…

Number Theory · Mathematics 2007-12-05 Kathrin Bringmann , Bernhard Heim

Let $T_R(M)$ be a tensor ring and $\mathcal{X}$, $\mathcal{Y}$ be two classes of $R$-modules. Under certain conditions, we prove that a $T_R(M)$-module $(A, u)$ is $Ind(\mathcal{X})$-Gorenstein projective if and only if $u$ is monomorphic…

Rings and Algebras · Mathematics 2025-12-30 Guoqiang Zhao , Juxiang Sun

Let $A$ and $B$ be rings, $U$ a $(B, A)$-bimodule and $T=\left(\begin{smallmatrix} A & 0 \\ U & B \\\end{smallmatrix}\right)$ be the triangular matrix ring. In this paper, we characterize the Gorenstein homological dimensions of modules…

Rings and Algebras · Mathematics 2014-12-31 Rongmin Zhu , Zhongkui Liu , Zhanping Wang

Let $g$ be a reductive Lie algebra over a field of characteristic zero. Suppose $g$ acts on a complex of vector spaces $M$ by $i_\lambda$ and $L_\lambda$, which satisfy the identities as contraction and Lie derivative do for smooth…

Algebraic Geometry · Mathematics 2007-05-23 Tomasz Maszczyk , Andrzej Weber

The paper presents a detailed description of duality for braided algebras, coalgebras, bialgebras, Hopf algebras and their modules and comodules in the infinite setting. Assuming that the dual objects exist, it is shown how a given braiding…

Quantum Algebra · Mathematics 2020-08-25 Elmar Wagner

M. Kobayashi introduced a notion of duality of weight systems. We tone this notion slightly down to a notion called coupling. We show that coupling induces a relation between the reduced zeta functions of the monodromy operators of the…

Algebraic Geometry · Mathematics 2007-05-23 Wolfgang Ebeling

We introduce a formalism based on a combinatorial notion of cell complex subject to an inclusion-reversing duality operation. Our main goal is to open the way for a functorial definition of field theories in a context where no manifold or…

Mathematical Physics · Physics 2022-04-15 Maxime Savoy

The theory of finitely generated relative (co)tilting modules has been established in the 1980s by Auslander and Solberg, and infinitely generated relative tilting modules have recently been studied by many authors in the context of…

Representation Theory · Mathematics 2019-04-30 Pooyan Moradifar , Siamak Yassemi

Given a finite dimensional algebra over a perfect field the text introduces covering functors over the mesh category of any modulated Auslander-Reiten component of the algebra. This is applied to study the composition of irreducible…

Representation Theory · Mathematics 2019-11-14 Claudia Chaio , Patrick Le Meur , Sonia Trepode

Let E = K< y_1, ..., y_n > be the exterior algebra. The ``(cohomological) distinguished pairs" of a graded E-module M describe the growth of a minimal graded injective resolution of M. Roemer gave a duality theorem between the distinguished…

Commutative Algebra · Mathematics 2007-05-23 Kohji Yanagawa

Let $R$ be a noetherian algebra over a Cohen--Macaulay ring admitting a canonical module, and assume that $R$ is maximal Cohen--Macaulay over the base ring. We provide a characterization of when $R$ is left weakly Gorenstein. We further…

Rings and Algebras · Mathematics 2026-03-03 Souvik Dey , Jian Liu , Xue-Song Lu

In this paper, we use the higher derived bracket to give the controlling algebra of pre-LieDer pairs. We give the cohomology of pre-LieDer pairs by using the twist $L_\infty$-algebra of this controlling algebra. In particular, we define the…

Rings and Algebras · Mathematics 2023-06-23 Shanshan Liu , Liangyun Chen

Define a module representation to be a linear parameterisation of a collection of module homomorphisms over a ring. Generalising work of Knuth, we define duality functors indexed by the elements of the symmetric group of degree three…

Rings and Algebras · Mathematics 2019-08-27 Tobias Rossmann

We define and study the Weil pairing on the moduli of twisted curves. If $X$ is a twisted curve, then we can combinatorially describe a certain subgroup and a quotient group of $\text{Pic}(X)[2]$ that are Weil dual. Moreover, the pairing…

Algebraic Geometry · Mathematics 2023-10-16 Ashwin Deopurkar

We prove a duality for factorization homology which generalizes both usual Poincar\'e duality for manifolds and Koszul duality for $\mathcal{E}_n$-algebras. The duality has application to the Hochschild homology of associative algebras and…

Algebraic Topology · Mathematics 2018-11-13 David Ayala , John Francis

For a left artinian ring A, we study the lattice torsA of torsion pairs in the category of finitely generated A-modules by considering an isomorphic lattice formed by certain closed sets in a topological space associated to A, the Ziegler…

Representation Theory · Mathematics 2026-02-23 Lidia Angeleri Hügel

In this article, we generalize the concept of torsion pairs and study its structure. As a trial of obtaining all torsion pairs, we decompose torsion pairs by projective modules and injective modules. Then we calculate torsion pairs on the…

Representation Theory · Mathematics 2012-05-08 Fan Kong , Keyan Song , Pu Zhang

This paper develops a duality theory for connected cochain DG algebras, with particular emphasis on the non-commutative aspects. One of the main items is a dualizing DG module which induces a duality between the derived categories of DG…

Rings and Algebras · Mathematics 2010-12-20 Peter Jorgensen
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