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Locally conformal symplectic (l.c.s.) groupoids are introduced as a generalization of symplectic groupoids. We obtain some examples and we prove that l.c.s. groupoids are examples of Jacobi groupoids in the sense of \cite{IM}. Finally, we…

Differential Geometry · Mathematics 2007-05-23 D. Iglesias-Ponte , J. C. Marrero

We show that the continuous $L^p$-cohomology of locally compact second countable groups is a quasi-isometric invariant. As an application, we prove partial results supporting a positive answer to a question asked by M.~Gromov, suggesting a…

Group Theory · Mathematics 2021-01-20 Marc Bourdon , Bertrand Remy

We establish a quantum Galois correspondence for compact Lie groups of automorphisms acting on a simple vertex operator algebra.

Quantum Algebra · Mathematics 2007-05-23 C. Dong , G. Mason

We construct a smooth Lie group structure on the group of real analytic diffeomorphisms of a compact analytic manifold with corners. This generalises the known analogous results in the situation where the real analytic manifold has no…

Group Theory · Mathematics 2015-12-14 Jan Milan Eyni

For a stratified group $G$, we construct a class of polarised Lie groups, which we call modifications of $G$, that are locally contactomorphic to it. Vice versa, we show that if a polarised group is locally contactomorphic to a stratified…

Metric Geometry · Mathematics 2020-05-20 Sebastiano Nicolussi , Alessandro Ottazzi

The (reduced) characteristic group of a locally conformally product manifold is obtained by restricting the action of its fundamental group to the non-flat factor of the universal cover, and taking the connected component of the identity in…

Differential Geometry · Mathematics 2025-12-01 Viviana del Barco , Andrei Moroianu

The automorphism group $\Sigma$ of a compact topological projective plane with a $16$-dimensional point space is a locally compact group. If the dimension of $\Sigma$ is at least $29$, then $\Sigma$ is known to be a Lie group. For the…

General Topology · Mathematics 2019-08-27 Helmut Salzmann

We prove that for every finitely generated subgroup of a virtually connected Lie group which admits a finite dimensional model for the classifying space for proper actions the assembly map in algebraic K-theory is split injective. We also…

Algebraic Topology · Mathematics 2016-01-18 Daniel Kasprowski

It is well-known that any compact Lie group appears as closed subgroup of a unitary group, $G\subset U_N$. The unitary group $U_N$ has a free analogue $U_N^+$, and the study of the closed quantum subgroups $G\subset U_N^+$ is a problem of…

Quantum Algebra · Mathematics 2018-10-02 Teodor Banica

In this paper we show as main results two structure theorems of a compact homogeneous locally conformally Kaehler (or shortly l.c.K.) manifold, a holomorphic structure theorem asserting that it has a structure of holomorphic principal fiber…

Complex Variables · Mathematics 2016-01-19 Keizo Hasegawa , Yoshinobu Kamishima

This is a preliminary version of a book on infinite-dimensional Lie groups. It covers the basics of calculus and manifolds in the context of locally convex spaces, based on Bastiani's notion of a smooth map. Starting from this concept, we…

Functional Analysis · Mathematics 2026-02-16 Helge Gloeckner , Karl-Hermann Neeb

We present a spectral sequence connecting the continuous and 'locally continuous' group cohomologies for topological groups. As an application it is shown that for contractible topological groups these cohomology concepts coincide. Similar…

General Topology · Mathematics 2011-10-06 Martin Fuchssteiner

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

Let $G$ be a topological group and let $K,L\subseteq G$ be closed subgroups, with $K\subseteq L$. We prove that if $L$ is a locally compact pro-Lie group, then the map $q:G/K\to G/L$ is a fibration. As an application of this, we obtain two…

Group Theory · Mathematics 2025-01-24 Linus Kramer , Raquel Murat García

Let $\mathcal M$ be a compact complex supermanifold. We prove that the set $\mathrm{Aut}_{\bar 0}(\mathcal M)$ of automorphisms of $\mathcal M$ can be endowed with the structure of a complex Lie group acting holomorphically on $\mathcal M$,…

Complex Variables · Mathematics 2015-06-04 Hannah Bergner , Matthias Kalus

We show that the class of connected, simple Lie groups that have non-vanishing third-degree continuous cohomology with trivial $\mathbb{R}$-coefficients consists precisely of all simple complex Lie groups and of…

Group Theory · Mathematics 2022-01-26 Carlos De La Cruz Mengual

We use the notion of the principal three-dimensional subgroup of a simple Lie group to identify certain special subspaces of the Lie algebra and address the question of whether these are calibrated for invariant forms on the group.

Differential Geometry · Mathematics 2022-01-19 Nigel Hitchin

In this paper we will define notion homotopy of morphisms of crossed modules of Lie algebras. Then we construct a groupoid structure of Lie crossed module morphisms and their homotopies.

Category Theory · Mathematics 2016-09-30 I. Ilker Akca , Yavuz Sidal

We study homomorphisms of locally compact quantum groups from the point of view of integrability of the associated action. For a given homomorphism of quantum groups $\Pi\colon\mathbb{H}\to\mathbb{G}$ we introduce quantum groups…

Operator Algebras · Mathematics 2016-03-22 Paweł Kasprzak , Fatemeh Khosravi , Piotr M. Sołtan

We study groups of homeomorphic bijections on spaces that are finite unions of compact connected linearly ordered subsets. We prove that all such groups when endowed with the topology of point-wise convergence are topological groups. }

General Topology · Mathematics 2023-12-29 Raushan Buzyakova