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In this paper we present a systematic study of the reflexivity properties of homologically finite complexes with respect to semidualizing complexes in the setting of nonlocal rings. One primary focus is the descent of these properties over…

Commutative Algebra · Mathematics 2007-05-23 Anders Frankild , Sean Sather-Wagstaff

A self-contained introduction to infinite dimensional representations over a tame hereditary algebra is provided, assuming a basic knowledge of the category of finite dimensional representations. This includes a complete description of all…

Representation Theory · Mathematics 2026-05-01 Lidia Angeleri Hügel , Andrew Hubery , Henning Krause

A detailed presentation of the results obtained during my Ph.D. research. The main investigations concern explicit descriptions of classes of finite dimensional pointed Hopf algebras and their quasi-isomorphism types.

Quantum Algebra · Mathematics 2009-09-29 Daniel Didt

The main goal of this article is to relate asymptotic geometric properties on a tower of coverings of a non-compact K\"ahler manifold of finite volume with reasonable geometric assumptions to its universal covering. Applicable examples…

Algebraic Geometry · Mathematics 2012-04-27 Sai-Kee Yeung

We classify the semifields and division semirings containing the max-plus semifield $\mathbb{Z}_\mathrm{max}$, which are finitely generated as $\mathbb{Z}_\mathrm{max}$-semimodules.

Rings and Algebras · Mathematics 2016-08-23 Jeffrey Tolliver

We introduce the notion of almost finite dimensionality of algebras and study its connection with the classical finiteness conditions.

Rings and Algebras · Mathematics 2007-05-23 Gábor Elek

Differential calculi are obtained for quantum homogeneous spaces by extending Woronowicz' approach to the present context. Representation theoretical properties of the differential calculi are investigated. Connections on quantum…

Quantum Algebra · Mathematics 2007-05-23 R. B. Zhang

We explore the interlacing between model category structures attained to classes of modules of finite $\mathcal{X}$-dimension, for certain classes of modules $\mathcal{X}$. As an application we give a model structure approach to the…

Rings and Algebras · Mathematics 2010-04-01 S. Estrada , P. A. Guil Asensio , M. Cortes Izurdiaga

Starting from the notion of totally reflexive modules, we survey the theory of Gorenstein homological dimensions for modules over commutative rings. The account includes the theory's connections with relative homological algebra and with…

Commutative Algebra · Mathematics 2010-01-03 Lars Winther Christensen , Hans-Bjørn Foxby , Henrik Holm

We propose a framework to give a precise meaning to the intuitive notion of "family of real forms of a variety parametrised by a variety" and study some fundamental properties of this notion. As an illustration, for any $n \geq 1$, we…

Algebraic Geometry · Mathematics 2023-05-22 Anna Bot , Adrien Dubouloz

The object of this paper is to introduce and study the concept of quasi-geometric infinite divisibility for distributions on $\bf R_+$. These distributions arise as mixing distributions of (discrete) geometric infinitely divisible Poisson…

Probability · Mathematics 2021-12-09 Nadjib Bouzar

Let $R$ be a commutative ring. We show that pure injective resolutions and pure projective resolutions can be constructed for unbounded complexes of $R$-modules. We use these to obtain a closed symmetric monoidal structure on the unbounded…

Rings and Algebras · Mathematics 2016-08-25 Abhishek Banerjee

We characterize the subclass of quasianti-Hermitian quaternionic Hamiltonian dynamics such that their complex projections are one-parameter semigroup dynamics in the space of complex quasi-Hermitian density matrices. As an example, the…

Mathematical Physics · Physics 2008-04-24 Giuseppe Scolarici

We give sufficient conditions which ensure that a functor of finite length from an additive category to finite-dimensional vector spaces has a projective resolution whose terms are finitely generated. For polynomial functors, we study also…

K-Theory and Homology · Mathematics 2023-07-14 Aurélien Djament , Antoine Touzé

We show that for quasi-compact quasi-separated schemes of finite dimension, the constructibility condition in real \'etale cohomology agrees with a notion of constructibility arising naturally from topology. As application we prove that the…

Algebraic Geometry · Mathematics 2022-01-04 Fangzhou Jin

In this thesis, we study cohomological properties of non-K\"ahler manifolds. In particular, we are concerned in investigating the cohomology of compact (almost-)complex manifolds, and of manifolds endowed with special structures, e.g.,…

Differential Geometry · Mathematics 2013-02-05 Daniele Angella

Inspired in part by recent work of \v{S}aroch and \v{S}\v{t}ov\'{\i}\v{c}ek in the setting of Gorenstein homological algebra, we extend the notion of Foxby-Golod ${\rm G_C}$-dimension of finitely generated modules with respect to a…

Rings and Algebras · Mathematics 2024-08-15 Rachid El Maaouy

The finitistic dimension of a triangulated category is introduced. For the category of perfect complexes over a ring it is shown that this dimension is finite if and only if the small finitistic dimension of the ring is finite.

Category Theory · Mathematics 2024-09-04 Henning Krause

It is proved that the sum of the Loewy lengths of the homology modules of a finite free complex F over a local ring R is bounded below by a number depending only on R. This result uncovers, in the structure of modules of finite projective…

Commutative Algebra · Mathematics 2010-05-20 L. L. Avramov , R. -O. Buchweitz , S. B. Iyengar , C. Miller

In this paper, we study the relative homological dimension based on the class of projectively coresolved Gorenstein flat modules (PGF-modules), that were introduced by Saroch and Stovicek. The resulting PGF-dimension of modules has several…

Rings and Algebras · Mathematics 2023-02-21 Georgios Dalezios , Ioannis Emmanouil