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200 papers

A survey of finite group actions on symplectic 4-manifolds is given with a special emphasis on results and questions concerning smooth or symplectic classification of group actions, group actions and exotic smooth structures, and…

Geometric Topology · Mathematics 2010-09-16 Weimin Chen

This is an expository article on properties of actions on Lie groups by subgroups of their automorphism groups. After recalling various results on the structure of the automorphism groups, we discuss actions with dense orbits, invariant and…

Group Theory · Mathematics 2017-03-29 S. G. Dani

Two types of recurrence sets are introduced for inverse semigroup partial actions in topological spaces. We explore their connections with similar notions for related types of imperfect symmetries (prefix inverse semigroup expansions,…

Dynamical Systems · Mathematics 2021-02-17 Marius Mantoiu

We study the topological dynamics of the action of an acylindrically hyperbolic group on the space of its infinite index convex cocompact subgroups by conjugation. We show that, for any suitable probability measure $\mu$, random walks with…

Group Theory · Mathematics 2025-01-10 M. Hull , A. Minasyan , D. Osin

The purpose of this paper is to survey the structure of closed and transitive transformation groups acting on a closed surface. In particular, we prove a number of relations between groups acting on the sphere that contain the rotation…

Geometric Topology · Mathematics 2015-03-04 Ferry Kwakkel

We study actions of finite groups on moduli spaces of stable holomorphic vector bundles and relate the fixed-point sets of those actions to representation varieties of certain orbifold fundamental groups.

Algebraic Geometry · Mathematics 2019-11-05 Florent Schaffhauser

We study minimality for continuous actions of abelian semigroups on compact Hausdorff spaces with a free interval. First, we give a necessary and sufficient condition for such a space to admit a minimal action of a given abelian semigroup.…

Dynamical Systems · Mathematics 2018-02-15 Matúš Dirbák , Roman Hric , Peter Maličký , Ľubomír Snoha , Vladimír Špitalský

In this paper we study the action of semigroups with nonempty interior of noncompact connected semisimple Lie groups, with finite center, on their maximal compact connected subgroups. As main results we describe the set of transitivity of a…

Dynamical Systems · Mathematics 2024-06-14 Mauro Patrão , Laércio dos Santos

The paper is devoted to study the behavior of quasitopological homotopy groups on inverse limit spaces. More precisely, we present some conditions under which the quasitopological homotopy group of an inverse limit space and especially a…

Algebraic Topology · Mathematics 2015-07-29 Tayyabe Nasri , Behrooz Mashayekhy , Hanieh Mirebrahimi

We review novel results and investigate actions and transformations of groups and semigroups on (quantum) spaces, present dynamical systems and zeta functions arising from these spaces, actions and transformations, discuss their stochastic…

Dynamical Systems · Mathematics 2013-04-02 Nikolaj M. Glazunov

In this paper, we introduce topological pressure for continuous actions of countable sofic groups on compact metrizable spaces. This generalizes the classical topological pressure for continuous actions of countable amenable groups on such…

Dynamical Systems · Mathematics 2012-05-30 Nhan-Phu Chung

The article is devoted to a structure of topological spaces related with topological quasigroups. Regular and complete spaces over topological quasigroups are studied. Separations and embeddings are also investigated for them. Their…

Group Theory · Mathematics 2023-12-29 S. V. Ludkowski

We consider semigroups of continuous, surjective, locally injective maps of a compact metric space, and whether such semigroups admit a transfer operator.

Dynamical Systems · Mathematics 2010-07-15 Justin R. Peters

We organize fundamental properties of quasi-Hamiltonian spaces on which a finite group acts, and we apply them to the theory of moduli spaces of flat connections on an oriented compact surface with boundary.

Symplectic Geometry · Mathematics 2025-12-23 Keito Takegoshi

We study and relate certain actions and extensions involving 2-groups.

Algebraic Topology · Mathematics 2009-09-25 Alejandro Adem , Ergün Yalçin

We survey recent work on the geometry and dynamics of transverse subgroups of semi-simple Lie groups.

Dynamical Systems · Mathematics 2025-02-12 Richard Canary , Tengren Zhang , Andrew Zimmer

We develop a cohomology theory of groups based on partial actions and explore its relation with the partial Schur multiplier as well as with cohomology of inverse semigroups.

Group Theory · Mathematics 2018-02-02 M. Dokuchaev , M. Khrypchenko

In this work, we give a survey of recent developments in the theory of partial actions of groups and Hopf algebras.

Rings and Algebras · Mathematics 2017-10-04 Eliezer Batista

Free actions of finite groups on spheres give rise to topological spherical space forms. The existence and classification problems for space forms have a long history in the geometry and topology of manifolds. In this article, we present a…

Geometric Topology · Mathematics 2017-08-29 Ian Hambleton

Our aim is to find some new links between linear (circular) orderability of groups and topological dynamics. We suggest natural analogs of the concept of algebraic orderability for topological groups involving order-preserving actions on…

Dynamical Systems · Mathematics 2022-09-29 Michael Megrelishvili