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We formulate problems of tight closure theory in terms of projective bundles and subbundles. This provides a geometric interpretation of such problems and allows us to apply intersection theory to them. This yields new results concerning…

Commutative Algebra · Mathematics 2007-05-23 Holger Brenner

Weakly orthomodular and dually weakly orthomodular lattices were introduced by the authors in a recent paper. Similarly as for orthomodular lattices we try to introduce an implication in these lattices which can be easily axiomatized and…

Rings and Algebras · Mathematics 2022-08-09 Ivan Chajda , Helmut Länger

We introduce heavily separable functors of the second kind and study them in three different situations. The first of these is with restrictions and extensions of scalars for modules over small preadditive categories. The second is with…

Rings and Algebras · Mathematics 2023-06-30 Abhishek Banerjee , Subhajit Das

We describe some basic facts about the weak subintegral closure of ideals in both the algebraic and complex-analytic settings. We focus on the analogy between results on the integral closure of ideals and modules and the weak subintegral…

Commutative Algebra · Mathematics 2008-09-12 Terence Gaffney , Marie A. Vitulli

Robustness is a basic property of any control system. In the context of linear output regulation, it was proved that embedding an internal model of the exogenous signals is necessary and sufficient to achieve tracking of the desired…

Systems and Control · Electrical Eng. & Systems 2021-04-23 Michelangelo Bin , Daniele Astolfi , Lorenzo Marconi

We define the notion of index-module for a couple of A-lattices in a vector space, A being a Dedekind ring. We apply this notion to prove by elementary means that a weak Gras conjecture (i.e for irreducible nontrivial Q-characters) holds…

Number Theory · Mathematics 2012-06-05 Stéphane Viguié

Concept embeddings offer a practical and efficient mechanism for injecting commonsense knowledge into downstream tasks. Their core purpose is often not to predict the commonsense properties of concepts themselves, but rather to identify…

Artificial Intelligence · Computer Science 2024-06-06 Hanane Kteich , Na Li , Usashi Chatterjee , Zied Bouraoui , Steven Schockaert

Let $N$ be a submodule of a finitely generated module $M$ over a Noetherian ring. A method for the computation of the submodule generated by the envelope of $N$ is given. The relations between weakly prime submodules and their envelopes are…

Commutative Algebra · Mathematics 2012-05-15 Erol Yilmaz , Sibel Cansu

We classify the simple infinite dimensional integrable modules with finite dimensional weight spaces over the quantized enveloping algebra of an untwisted affine algebra. We prove that these are either highest (lowest) weight integrable…

Quantum Algebra · Mathematics 2007-05-23 Vyjayanthi Chari , Jacob Greenstein

In this paper, we give a generalization for weakly primary submodules called $I$-primary submodule and we study some properties of it. We give some characterizations of $I$-primary submodules. Also we establish the situation of $I$-primary…

Commutative Algebra · Mathematics 2017-01-24 Ismael Akray , Halgurd S. Hussein

Let $\Lambda$ be an artin algebra. We are going to consider full subcategories of $\mod\Lambda$ closed under finite direct sums and under submodules with infinitely many isomorphism classes of indecomposable modules. The main result asserts…

Representation Theory · Mathematics 2010-09-07 Claus Michael Ringel

We investigate the correspondence between generalized persistence modules and graded modules in the case the indexing set has a monoid action. We introduce the notion of an action category over a monoid graded ring. We show that the…

Algebraic Topology · Mathematics 2021-02-15 Eero Hyry , Markus Klemetti

A method is provided for computing an upper bound of the complexity of a module over a local ring, in terms of vanishing of certain cohomology modules. We then specialize to complete intersections, which are precisely the rings over which…

Commutative Algebra · Mathematics 2007-06-26 Petter Andreas Bergh

We study elementary modal logics, i.e. modal logic considered over first-order definable classes of frames. The classical semantics of modal logic allows infinite structures, but often practical applications require to restrict our…

Logic in Computer Science · Computer Science 2012-10-10 Jakub Michaliszyn , Jan Otop , Piotr Witkowski

When working with (multi-parameter) persistence modules, one usually makes some type of tameness assumption in order to obtain better control over their algebraic behavior. One such notion is Ezra Millers notion of finite encodability,…

Algebraic Topology · Mathematics 2024-07-12 Lukas Waas

In this survey paper we give account of several approaches to the strictification and non-strictification of monoidal categories, which are constructions that turn a monoidal category into a (non-)strict one monoidally equivalent to the…

Category Theory · Mathematics 2024-12-31 Jorge Becerra

In this paper, we first introduce and study the notions of strongly $\phi$-flat modules and strongly nonnil-injective modules. And then, we investigate the homology dimensions of modules and rings in terms of these two notions. Finally we…

Commutative Algebra · Mathematics 2023-02-21 Xiaolei Zhang , Shiqi Xing , Wei Qi

Much of the theory of large cardinals beyond a measurable cardinal concerns the structure of elementary embeddings of the universe of sets into inner models. This paper seeks to answer the question of whether the inner model uniquely…

Logic · Mathematics 2025-02-05 Gabriel Goldberg

We study circularity in DF0L systems, a generalization of D0L systems. We focus on two different types of circularity, called weak and strong circularity. When the morphism is injective on the language of the system, the two notions are…

Discrete Mathematics · Computer Science 2025-08-08 Herman Goulet-Ouellet , Karel Klouda , Štěpán Starosta

We study the class of modules, called cosilting modules, which are defined as the categorical duals of silting module. Several characterizations of these modules and connections with silting modules are presented. We prove that Bazzoni…

Rings and Algebras · Mathematics 2017-03-01 Simion Breaz , Flaviu Pop