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We study expansions of a vector space $V$ over a field $\mathbb F$, possibly with extra structure, with a generic submodule over a subring of $\mathbb F$. We construct a natural expansion by existentially defined functions so that the…

In this article we study definable functions in tame expansions of algebraically closed valued fields. For a given definable function we have two types of results: of type (I), which hold at a neighborhood of infinity, and of type (II),…

逻辑 · 数学 2018-02-12 Pablo Cubides Kovacsics , Françoise Delon

We prove that infinite definably simple locally finite groups of finite centraliser dimension are simple groups of Lie type over locally finite fields. Then, we identify conditions on automorphisms of a stable group that make it resemble…

逻辑 · 数学 2019-06-12 Ulla Karhumäki

In this article we further develop the theory of valuation independence and study its relation with classical notions in valuation theory such as immediate and defectless extensions. We use this general theory to settle two open questions…

交换代数 · 数学 2018-03-28 Anna Blaszczok , Pablo Cubides Kovacsics , Franz-Viktor Kuhlmann

The purpose of this paper is to initiate a new attack on Arveson's resistant conjecture, that all graded submodules of the $d$-shift Hilbert module $H^2$ are essentially normal. We introduce the stable division property for modules (and…

算子代数 · 数学 2011-04-26 Orr Shalit

In this paper we provide an identity between determinant and generalized matrix function. Also, a criterion of positive semi-definite matrices affirming the permanent dominant conjecture is given. As a consequence, infinitely many infinite…

环与代数 · 数学 2023-11-01 Kijti Rodtes

Motivated by the ubiquitous sampled-data setup in applied control, we examine the stability of a class of difference equations that arises by sampling a right- or left-invariant flow on a matrix Lie group. The map defining such a difference…

动力系统 · 数学 2019-02-11 Philip James McCarthy , Christopher Nielsen

Consider $(T_t)_{t\ge 0}$ and $(S_t)_{t\ge 0}$ as real $C_0$-semigroups generated by closed and symmetric sesquilinear forms on a standard form of a von Neumann algebra. We provide a characterisation for the domination of the semigroup…

算子代数 · 数学 2024-04-12 Sahiba Arora , Ralph Chill , Sachi Srivastava

Stability and dependence are model-theoretic notions that have recently proved highly effective in the study of structural and algorithmic properties of hereditary graph classes, and are considered key notions for generalizing to hereditary…

组合数学 · 数学 2026-04-02 H. Buffière , E. Kim , P. Ossona de Mendez

Given a graph G = (V,E), a subset S of V is dominating if for every v in V - S there exists u in S such that uv is in E. A dominating subset S of V is secure if for every v in V - S there exists u in S such that (S - {u}) U {v} is…

组合数学 · 数学 2015-03-16 Martin Manrique , Karam Ebadi , Morteza Ebrahimi

This paper addresses a large class of vector optimization problems in infinite-dimensional spaces with respect to two important binary relations derived from domination structures. Motivated by theoretical challenges as well as by…

最优化与控制 · 数学 2021-02-17 Truong Q. Bao , Boris S. Mordukhovich , Antoine Soubeyran , Christiane Tammer

A set $D \subseteq V(G)$ is a \emph{total dominating set} of $G$ if for every vertex $v \in V(G)$ there exists a vertex $u \in D$ such that $u$ and $v$ are adjacent. A total dominating set of $G$ of minimum cardinality is called a…

组合数学 · 数学 2015-02-19 Cong X. Kang

Given a partition ${\mathcal V}=(V_1, \ldots,V_m)$ of the vertex set of a graph $G$, an {\em independent transversal} (IT) is an independent set in $G$ that contains one vertex from each $V_i$. A {\em fractional IT} is a non-negative real…

组合数学 · 数学 2017-03-10 Ron Aharoni , Irina Gorelik

For an arbitrary field $K$ and $K$-variety $V$, we introduce the \'etale-open topology on the set $V(K)$ of $K$-points of $V$. This topology agrees with the Zariski topology, Euclidean topology, or valuation topology when $K$ is separably…

逻辑 · 数学 2024-10-24 Will Johnson , Chieu-Minh Tran , Erik Walsberg , Jinhe Ye

This article is concerned with finite rank stability theory, and more precisely two classical ways to decompose a type using minimal types. The first is its domination equivalence to a Morley power of minimal types, and the second its…

逻辑 · 数学 2025-12-17 Christine Eagles , Léo Jimenez

Let $k$ be a field, let $G$ be a reductive group, and let $V$ be a linear representation of $G$. Let $V//G = Spec(Sym(V^*))^G$ denote the geometric quotient and let $\pi: V \to V//G$ denote the quotient map. Arithmetic invariant theory…

数论 · 数学 2013-10-30 Manjul Bhargava , Benedict H. Gross , Xiaoheng Wang

We introduce an abstract framework to study certain classes of stably embedded pairs of models of a complete $\mathcal{L}$-theory $T$, called \textit{beautiful pairs}, which comprises Poizat's belles paires of stable structures and van den…

逻辑 · 数学 2026-02-17 Pablo Cubides Kovacsics , Martin Hils , Jinhe Ye

We initiate a systematic investigation of the abstract elementary classes that have amalgamation, satisfy tameness (a locality property for orbital types), and are stable (in terms of the number of orbital types) in some cardinal. Assuming…

逻辑 · 数学 2018-11-22 Sebastien Vasey

In this paper, we show that a partitioned formula \phi is dependent if and only if \phi has uniform definability of types over finite partial order indiscernibles. This generalizes our result from a previous paper [1]. We show this by…

逻辑 · 数学 2011-08-12 Vincent Guingona

We study $\mu$-stabilizers for groups definable in ACVF in the valued field sort. We prove that $\mathrm{Stab}^\mu(p)$ is an infinite unbounded definable subgroup of $G$ when $p$ is standard and unbounded. In the particular case when $G$ is…

逻辑 · 数学 2024-10-24 Jinhe Ye