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The paper investigates exterior and symmetric (co)homologies of groups. We introduce symmetric homology of groups and compute exterior and symmetric (co)homologies of some finite groups. We also compare the classical, exterior and symmetric…

Group Theory · Mathematics 2021-07-19 Valeriy G. Bardakov , Mikhail V. Neshchadim , Mahender Singh

We present constructions of symmetric complete sum-free sets in general finite cyclic groups. It is shown that the relative sizes of the sets are dense in $[0,\frac{1}{3}]$, answering a question of Cameron, and that the number of those…

Combinatorics · Mathematics 2017-05-02 Ishay Haviv , Dan Levy

We give a new infinite family of group homomorphisms from the braid group B_k to the symmetric group S_{mk} for all k and m \geq 2. Most known permutation representations of braids are included in this family. We prove that the…

Group Theory · Mathematics 2008-11-27 Amiel Ferman , Tahl Nowik , Robert Schwartz , Mina Teicher

We give a topological framework for the study of Sela's limit groups: limit groups are limits of free groups in a compact space of marked groups. Many results get a natural interpretation in this setting. The class of limit groups is known…

Group Theory · Mathematics 2007-05-23 Christophe Champetier , Vincent Guirardel

Let $\Gamma$ be a torsion-free hyperbolic group. We study $\Gamma$--limit groups which, unlike the fundamental case in which $\Gamma$ is free, may not be finitely presentable or geometrically tractable. We define model $\Gamma$--limit…

Group Theory · Mathematics 2017-05-09 Daniel Groves , Henry Wilton

A lot of attention has been paid to the investigation of the algebraic properties of linear codes. In most cases, this investigation involves the determination of required code automorphisms, which are useful for decoders, such as the…

Combinatorics · Mathematics 2024-06-04 Ma Jicheng , Yan Guiying

We initiate the study of analogues of symmetric spaces for the family of finite dihedral groups. In particular, we investigate the structure of the automorphism group, characterize the involutions of the automorphism group, and determine…

This paper introduces a SAT-based technique that calculates a compact and complete symmetry-break for finite model finding, with the focus on structures with a single binary operation (magmas). Classes of algebraic structures are typically…

Logic in Computer Science · Computer Science 2025-02-17 Marek Dančo , Mikoláš Janota , Michael Codish , João Jorge Araújo

In this paper, we investigate some applications of commutator subgroups to homotopy groups and geometric groups. In particular, we show that the intersection subgroups of some canonical subgroups in certain link groups modulo their…

Algebraic Topology · Mathematics 2010-02-03 J. Y. Li , J. Wu

In this note, we outline the general development of a theory of symmetric homology of algebras, an analog of cyclic homology where the cyclic groups are replaced by symmetric groups. This theory is developed using the framework of crossed…

Algebraic Topology · Mathematics 2007-11-05 Shaun Ault , Zbigniew Fiedorowicz

Recently George Bergman proved that the symmetric group of an infinite set possesses the following property which we call by the {\it universality of finite width}: given any generating set $X$ of the symmetric group of an infinite set…

Group Theory · Mathematics 2007-05-23 Vladimir Tolstykh

Symmetry is usually defined via transformations described by a (higher) group. But a symmetry really corresponds to an algebra of local symmetric operators, which directly constrains the properties of the system. In this paper, we point out…

Strongly Correlated Electrons · Physics 2023-04-25 Arkya Chatterjee , Xiao-Gang Wen

We show an example of a symmetric homeomorphism $h$ of the real line $\mathbb{R}$ onto itself such that $h^{-1}$ is not symmetric. This implies that the set of all symmetric self-homeomorphisms of $\mathbb{R}$ does not constitute a group…

Complex Variables · Mathematics 2019-10-15 Huaying Wei , Katsuhiko Matsuzaki

We show the boundedness of finite subgroups in any anisotropic reductive algebraic group over a perfect field that contains all roots of 1. Also, we provide explicit bounds for orders of finite subgroups of automorphism groups of…

Algebraic Geometry · Mathematics 2021-06-30 Constantin Shramov , Vadim Vologodsky

In this paper we complete the classification of topological symmetry groups for complete graphs $K_n$ by characterizing which $K_n$ can have a cyclic group, a dihedral group, or a subgroup of $D_m \times D_m$ where $m$ is odd, as its…

Geometric Topology · Mathematics 2014-12-24 Erica Flapan , Blake Mellor , Ramin Naimi , Michael Yoshizawa

The notion of global higher-form symmetries has received much attention, but leaves room for a more systematic mathematical formulation. In this article, we highlight the concept of higher automorphism bundles from the field of higher…

High Energy Physics - Theory · Physics 2025-10-08 Alonso Perez-Lona

We introduce the concept of linked systems of symmetric group divisible designs. The connection with association schemes is established, and as a consequence we obtain an upper bound on the number of symmetric group divisible designs which…

Combinatorics · Mathematics 2017-07-04 Hadi Kharaghani , Sho Suda

In this work, we look at the symmetry of normal modes in symmetric structures, particularly structures with cyclic symmetry. We show that normal modes of symmetric structures have different levels of symmetry, or symmetricity. One novel…

Biological Physics · Physics 2016-09-21 Guang Song

We give a sharp bound on the number of automorphisms of a stable curve of a given genus and describe all curves attaining this bound.

Algebraic Geometry · Mathematics 2007-05-23 Michael A. van Opstall , Razvan Veliche

Generically an almost complex structure has no symmetries at all, but there exist symmetric structures. In this paper we describe how to guarantee that the pseudogroup of local symmetries is small (finite-dimensional). It will be indicated…

Differential Geometry · Mathematics 2013-11-19 Boris Kruglikov