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In constructive algebra one cannot in general decide the irreducibility of a polynomial over a field K. This poses some problems to showing the existence of the algebraic closure of K. We give a possible constructive interpretation of the…

Logic · Mathematics 2014-09-12 Bassel Mannaa , Thierry Coquand

If $\A$ is an algebra over a field $\F$ and $\s$ is a generating set of $\A$, the length of $\s$ indicates the maximal length needed to express an arbitrary element of $\A$ as a linear combination of words in the elements of $\s$. The…

Rings and Algebras · Mathematics 2021-10-25 O. V. Markova , C. Martínez , R. L. Rodrigues

Suppose E/F is a field extension. We ask whether or not there exists an element of E whose characteristic polynomial has one or more zero coefficients in specified positions. We show that the answer is frequently ``no''. We also prove…

Algebraic Geometry · Mathematics 2007-05-23 Zinovy Reichstein , Boris Youssin

In the paper "An Abelian Loop for Non-Composites" (arXiv:110.14716), we introduced a group-like structure consisting of odd prime numbers and 1, with properties that allowed us to prove analogous results to well known theorems in Number…

General Mathematics · Mathematics 2024-12-11 Raghavendra N. Bhat

We show that an arbitrary algebra ${ A}$, (of arbitrary dimension, over an arbitrary base field and any identity is not suppose for the product), is semisimple if and only if it has zero annihilator and admits a semi-division linear basis.…

Rings and Algebras · Mathematics 2024-10-04 Antonio J. Calderon Martin

A new efficient algorithm is proposed for factoring polynomials over an algebraic extension field. The extension field is defined by a polynomial ring modulo a maximal ideal. If the maximal ideal is given by its Groebner basis, no extra…

Symbolic Computation · Computer Science 2010-10-04 Yao Sun , Dingkang Wang

We introduce and investigate the concept of Stratified Algebra, a new algebraic framework equipped with a layer-based structure on a vector space. We formalize a set of axioms governing intra-layer and inter-layer interactions, study their…

General Mathematics · Mathematics 2025-05-27 Stanislav Semenov

We study a new flexible method to extend linearly the graph of a non-linear, and usually not bijective, function so that the resulting extension is a bijection. Our motivation comes from cryptography. Examples from symmetric cryptography…

Cryptography and Security · Computer Science 2021-12-30 Claude Gravel , Daniel Panario

Let $G$ be a finite abelian group and $s$ be a positive integer. A subset $A$ of $G$ is called a {\em perfect $s$-basis of $G$} if each element of $G$ can be written uniquely as the sum of at most $s$ (not-necessarily-distinct) elements of…

Number Theory · Mathematics 2022-11-28 Bela Bajnok , Connor Berson , Hoang Anh Just

We introduce the notion of \pi-extension of the semigroup \mathbb{Z}_+ and study the extensions of the Toeplitz algebras by isometric operators. We show that when the action of the Toeplitz algebra is irreducible all such extensions…

Operator Algebras · Mathematics 2013-02-05 T. A. Grigoryan , E. V. Lipacheva , V. H. Tepoyan

In this work we investigate the problem of producing iso-dual algebraic geometry (AG) codes over a finite field $\mathbb{F}_q$ with $q$ elements. Given a finite separable extension $\mathcal{M}/\mathcal{F}$ of function fields and an…

Information Theory · Computer Science 2026-04-16 María Chara , Ricardo Podestá , Luciane Quoos , Ricardo Toledano

This paper analyzes theorems about algebraic field extensions using the techniques of reverse mathematics. In section 2, we show that $\mathsf{WKL}_0$ is equivalent to the ability to extend $F$-automorphisms of field extensions to…

Logic · Mathematics 2013-05-13 François G. Dorais , Jeffry Hirst , Paul Shafer

We prove that there exists essentially one {\it minimal} differential algebra of distributions $\A$, satisfying all the properties stated in the Schwartz impossibility result [L. Schwartz, Sur l'impossibilit\'e de la multiplication des…

Functional Analysis · Mathematics 2024-05-20 Nuno Costa Dias , Cristina Jorge , Joao Nuno Prata

Two extension problems are solved. First, the class of locally matricial algebras over an arbitrary field is closed under extensions. Second, the class of locally finite dimensional semisimple algebras over a fixed field is closed under…

Rings and Algebras · Mathematics 2025-04-18 K. R. Goodearl

We survey theory developed over the past 10 years of semirings which need not be additively cancellative. The main feature is a specified ``null ideal'' $\mcA_0$ of a semiring $\mcA,$ taking the place of a zero element, which permits…

Rings and Algebras · Mathematics 2026-03-17 Louis Halle Rowen

Recently, Widmer introduced a new sufficient criterion for the Northcott property on the finiteness of elements of bounded height in infinite algebraic extensions of number fields. We provide a simplification of Widmer's criterion when the…

Number Theory · Mathematics 2024-09-06 Sara Checcoli , Arno Fehm

For any real division algebra A of finite dimension greater than one, the signs of the determinants of left multiplication and right multiplication by a non-zero element are shown to form an invariant of A, called its double sign. The…

Rings and Algebras · Mathematics 2011-10-13 Erik Darpö , Ernst Dieterich

A generalization of the semisimplicity concept for polyadic algebraic structures is proposed. If semisimple structures can be presented in block diagonal matrix form (resulting in the Wedderburn decomposition), a general form of polyadic…

Rings and Algebras · Mathematics 2022-09-20 Steven Duplij

In recent decades, the defect of finite extensions of valued fields has emerged as the main obstacle in several fundamental problems in algebraic geometry such as the local uniformization problem. Hence, it is important to identify…

Commutative Algebra · Mathematics 2025-03-24 Caio Henrique Silva de Souza , Mark Spivakovsky

It was proved that whenever $\mathbb{N}$ is partitioned into finitely many cells, one cell must contain arbitrary length arithmetic and geometric progression nicely intertwined, so that one cell must be rich in the sense of containing…

Combinatorics · Mathematics 2012-01-24 Dibyendu De , Ram Krishna Paul