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Related papers: Some functor calculus on semirings

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For a regular normal element in an arbitrary ring, we study the category of its module factorizations. The cokernel functor relates module factorizations with Gorenstein projective components to Gorenstein projective modules over the…

Rings and Algebras · Mathematics 2025-08-28 Xiao-Wu Chen

In this paper we present an algorithm to compute a Standard Basis for a fractional ideal $\mathcal{I}$ of the local ring $\mathcal{O}$ of an $n$-space algebroid curve with several branches. This allows us to determine the semimodule of…

Algebraic Geometry · Mathematics 2020-01-09 Emilio Carvalho , Marcelo Escudeiro Hernandes

A functorial semi-norm on singular homology is a collection of semi-norms on the singular homology groups of spaces such that continuous maps between spaces induce norm-decreasing maps in homology. Functorial semi-norms can be used to give…

Geometric Topology · Mathematics 2015-03-11 Diarmuid Crowley , Clara Loeh

We generalize the notion of semi-universality in the classical deformation problems to the context of derived deformation theories. A criterion for a formal moduli problem to be semi-prorepresentable is produced. This can be seen as an…

Algebraic Geometry · Mathematics 2023-09-27 An Khuong Doan

An ideal is a classical object of study in the field of algebraic number theory. In maximal quadratic orders of number fields, ideals usually represented by the $\mathbb Z$-basis. This form of representation is used in most of the…

Number Theory · Mathematics 2014-02-11 Anton S. Mosunov

Let $R$ be a finite commutative ring with identity, and let $P$ be a proper prime ideal of $R$. The prime ideal graph $\Gamma_P(R)$ has vertex set of $R\setminus\{0\}$, where two distinct vertices $x$ and $y$ are adjacent if and only if…

Commutative Algebra · Mathematics 2026-05-14 Tabinda Rasheed , Wang Yao

I introduce the concept of integral closure for elements and ideals in idempotent semirings, and establish how it corresponds to its namesake in commutative algebra. In the case of free semirings, integral closure can be understood in terms…

Commutative Algebra · Mathematics 2016-03-08 Andrew W. Macpherson

We show that a generalization of the theory of quantales and prequantales provides a noncommutative and nonassociative abstract ideal theoretic setting for the theories of star operations, semistar operations, semiprime operations, ideal…

Rings and Algebras · Mathematics 2010-11-19 Jesse Elliott

We show that Shipley's "detection functor" for symmetric spectra generalizes to motivic symmetric spectra. As an application, we construct motivic strict ring spectra representing morphic cohomology, semi-topological $K$-theory, and…

Algebraic Geometry · Mathematics 2013-04-24 Jeremiah Heller

Let $R$ be a commutative ring with identity, and let $\R(R)$ denote the semiring of radical ideals of $R$. The radical functor $\R$, from the category of $R$-modules $R{-}\boldsymbol{\sf{Mod}}$ to the category of $\R(R)$-semimodules…

Commutative Algebra · Mathematics 2025-02-04 Mahboubeh Safaeipour , Hosein Fazaeli Moghimi , Fatemeh Rashedi

This paper establishes a theoretical framework connecting neural network learning with abstract algebraic structures. We first present a minimal counterexample demonstrating that standard neural networks completely fail on compositional…

Machine Learning · Computer Science 2026-03-23 Ruoqi Sun

We introduce rational semimodules over semirings whose addition is idempotent, like the max-plus semiring, in order to extend the geometric approach of linear control to discrete event systems. We say that a subsemimodule of the free…

Optimization and Control · Mathematics 2007-05-23 Stephane Gaubert , Ricardo Katz

We provide a generalization of the construction of a spectrum of a commutative ring as a locally ringed space, applicable to cone injectivity classes in general contexts, especially in locally finitely presentable categories. In its full…

Category Theory · Mathematics 2023-12-05 Jan Jurka , Tomáš Perutka , Lukáš Vokřínek

In the present survey paper, we present several new classes of Hochster's spectral spaces "occurring in nature", actually in multiplicative ideal theory, and not linked to or realized in an explicit way by prime spectra of rings. The…

Commutative Algebra · Mathematics 2015-10-16 Carmelo A. Finocchiaro , Marco Fontana , Dario Spirito

Let (T,m) be a complete local (Notherian) ring, C a finite set of pairwise incomparable nonmaximal prime ideals of T, and p a nonzero element. We provide necessary and sufficient conditions for T to be the completion of an integral domain A…

Commutative Algebra · Mathematics 2009-11-24 John Chatlos , Brian Simanek , Nathaniel G. Watson , Sherry X. Wu

If Com is the reduced commutative operad, the category of Com-algebras in spectra is the category of nounital commutative ring spectra. The theme of this survey is that many important constructions on Com-algebras are given by taking the…

Algebraic Topology · Mathematics 2024-10-08 Nicholas J. Kuhn

We study several structure aspects of functor categories from a small additive category to a module category, in particular the category F(A,K) of functors from finitely generated free modules over a commutative ring A to vector spaces over…

Category Theory · Mathematics 2024-12-23 Aurélien Djament , Antoine Touzé

Functorial semi-norms are semi-normed refinements of functors such as singular (co)homology. We investigate how different types of representability affect the (non-)triviality of finite functorial semi-norms on certain functors or classes.…

Algebraic Topology · Mathematics 2015-09-08 Clara Loeh

We adapt the classical framework of algebraic theories to work in the setting of (infinity,1)-categories developed by Joyal and Lurie. This gives a suitable approach for describing highly structured objects from homotopy theory. A central…

Algebraic Topology · Mathematics 2010-11-16 James Cranch

In an attempt to create an algebraic framework for dual canonical bases and total positivity in semisimple groups, we initiate the study of a new class of commutative algebras.

Representation Theory · Mathematics 2007-05-23 Sergey Fomin , Andrei Zelevinsky