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We aim to construct a non-commutative algebraic geometry by using generalised valuations. To this end, we introduce groupoid valuation rings and associate suitable value functions to them. We show that these objects behave rather like their…

Rings and Algebras · Mathematics 2017-06-15 Nikolaas Verhulst

The aim of this paper is to build a theory of commutative and noncommutative {\it injective} valuations of various algebras (including algebras with zero divisors). The targets of our valuations are (well-)ordered commutative and…

Rings and Algebras · Mathematics 2025-08-20 Arkady Berenstein , Dima Grigoriev

We look at value functions of primes in simple Artinian rings and associate arithmetical pseudo-valuations to Dubrovin valuation rings which, in the Noetherian case, are $\mathbb{Z}$-valued. This allows a divisor theory for bounded Krull…

Rings and Algebras · Mathematics 2013-12-16 Freddy Van Oystaeyen , Nikolaas Verhulst

We introduce the notion of a gauge and of a tagged partition (subordinate to a given gauge) by intersections of open and closed sets of a compact metric space extending the corresponding notions in Henstock-Kurzweil integration of…

Functional Analysis · Mathematics 2025-03-07 Abbas Edalat

We develop the theory of central ideals on commutative rings. We introduce and study the central seminormalization of a ring in another one. This seminormalization is related to the theory of regulous functions on real algebraic varieties.…

Algebraic Geometry · Mathematics 2021-03-18 Jean-Philippe Monnier

We extend the classical links between valuations and orderings on fields to Tignol-Wadsworth gauges and positive cones on finite-dimensional simple algebras with involution. We also study the compatibility of gauges and positive cones, and…

Rings and Algebras · Mathematics 2021-05-14 Vincent Astier , Thomas Unger

In this article, using key tools including Zhou valuations, Tian functions and a convergence result for relative types, we establish necessary and sufficient conditions for the existence of valuative interpolations on the rings of germs of…

Complex Variables · Mathematics 2025-10-28 Shijie Bao , Qi'an Guan , Zhitong Mi , Zheng Yuan

Arithmetic valuations are intimately connected with the structure of the ideals of a commutative ring. We show how the generalized idempotent semiring valuations of Jeffrey and Noah Giansiracusa can be used to make this connection explicit.…

Commutative Algebra · Mathematics 2024-04-18 William Bernardoni

Let $G$ be a group, $F$ a field, and $A$ a finite-dimensional central simple algebra over $F$ on which $G$ acts by $F$-algebra automorphisms. We study the ideals and subalgebras of $A$ which are preserved by the group action. Let $V$ be the…

Representation Theory · Mathematics 2007-05-23 Daniel S. Sage

We introduce fusion algebras with not necessarily positive structure constants and without identity element. We prove that they are semisimple when tensored with $\mathbb{C}$ and that their characters satisfy orthogonality relations. Then…

Rings and Algebras · Mathematics 2007-05-23 Michael Cuntz

Let A be a central simple algebra with involution sigma of first or second kind. Let v be a valuation on the sigma-fixed part F of Z(A). A sigma-special v-gauge g on A is a kind of value function on A extending v on F, such that g(sigma(x)…

Rings and Algebras · Mathematics 2009-02-06 J. -P. Tignol , A. R. Wadsworth

The present paper studies the existence of valuative interpolation on the local ring of an irreducible analytic subvariety at singular points. We firstly develop the concepts and methods of Zhou weights and Tian functions near singular…

Complex Variables · Mathematics 2026-01-06 Shijie Bao , Qi'an Guan , Zhitong Mi , Zheng Yuan

For an irreducible affine variety $X$ over an algebraically closed field of characteristic zero we define two new classes of modules over the Lie algebra of vector fields on $X$ - gauge modules and Rudakov modules, which admit a compatible…

Representation Theory · Mathematics 2017-09-27 Yuly Billig , Vyacheslav Futorny , Jonathan Nilsson

We introduce the notion of a C*-valued weight between two C*-algebras as a generalization of an ordinary weight on a C*-algebra and as a C*-version of operator valued weights on von Neumann algebras. Also, some form of lower semi-continuity…

funct-an · Mathematics 2008-02-03 Johan Kustermans

After the language of module and theirs morphisms, this short course presents matricial calculus and determinants in a commutative ring as appliction of ``remarquable identities'' in the ring of polynomials with integer coefficients with…

History and Overview · Mathematics 2025-08-08 Alexis Marin

The tadpole conjecture proposes that complex structure moduli stabilisation by fluxes that have low tadpole charge can be realised only at special points in moduli space, leading generically to (large) gauge symmetries. Here we provide an…

High Energy Physics - Theory · Physics 2023-04-17 Andreas P. Braun , Bernardo Fraiman , Mariana Graña , Severin Lüst , Héctor Parra de Freitas

In this paper, a new algebraic structure is defined, which is a new MV-algebra that has a product operation, we will call it MVW-rig (Multivalued-weak rig). This structure is defined with universal algebra axioms, it is presented with a…

Rings and Algebras · Mathematics 2017-09-22 Yuri A. Poveda , Alejandro Estrada

In this note we relate the valuations of the algebras appearing in the non-commutative geometry of quantized algebras to properties of sub-lattices in some vector spaces. We consider the case of algebras with $PBW$-bases and prove that…

Rings and Algebras · Mathematics 2007-05-23 C. Baetica , F. Van Oystaeyen

In this paper, we study ideal- and congruence-simpleness for the Leavitt path algebras of directed graphs with coefficients in a commutative semiring S, as well as establish some fundamental properties of those algebras. We provide a…

Rings and Algebras · Mathematics 2020-08-25 Yefim Katsov , Tran Giang Nam , Jens Zumbrägel

The main scope of this paper is to introduce valuation semirings in general and discrete valuation semirings in particular. In order to do that, first we define valuation maps and investigate them. Then we define valuation semirings with…

Commutative Algebra · Mathematics 2017-05-11 Peyman Nasehpour
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