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We extend the characterization of Lie bialgebroids via Manin triples to the context of double structures over Lie groupoids. We consider Lie bialgebroid groupoids, given by LA-groupoids in duality, and establish their correspondence with…

Differential Geometry · Mathematics 2025-11-21 Ana Carolina Mançur

We briefly indicate some implications of [1] for the second Lie algebra cohomology of equivariant map algebras and (twisted multi) loop algebras.

Differential Geometry · Mathematics 2021-08-10 Bas Janssens

Analysis of function spaces and special functions are closely related to the representation theory of Lie groups. We explain here the connection between the Laguerre functions, the Laguerre polynomials, and the Meixner-Pollacyck polynomials…

Representation Theory · Mathematics 2007-05-23 Mark Davidson , Gestur Olafsson

The main result of this article is an application of the theory of invariant convex cones of Lie algebras to the study of unitary representations of Lie supergroups. It also includes an exposition of recent results of the second author on…

Representation Theory · Mathematics 2010-12-14 Karl-Hermann Neeb , Hadi Salmasian

The corepresentation theory of continuous groups is presented without the assumption that the subgroup $G$ of the group with antilinear operations is unitary. The formulas of the corepresentation theory with unitary groups $G$ can be…

Mathematical Physics · Physics 2009-06-01 J Kocinski , M Wierzbicki

We survey the concept of multiplicativity from its initial appearance in the theory of Poisson-Lie groups to the far-reaching generalizations, for multivectors and differential forms in the geometry and the generalized geometry of Lie…

Symplectic Geometry · Mathematics 2016-08-05 Yvette Kosmann-Schwarzbach

Power graphs of both groups and semigroups have been widely studied. While the power graph of a quasigroup can be defined analogously to that of a group, power graphs of quasigroups and loops have thus far been little studied. In this paper…

Group Theory · Mathematics 2022-05-26 Riley Britten

Generators and relations are given for the subalgebra of cocommutative elements in the quantized coordinate rings of the classical groups, where the deformation parameter q is transcendental. This is a ring theoretic formulation of the well…

Quantum Algebra · Mathematics 2007-05-23 M. Domokos , T. H. Lenagan

Multiparametric quantum deformations of $gl(2)$ are studied through a complete classification of $gl(2)$ Lie bialgebra structures. From them, the non-relativistic limit leading to harmonic oscillator Lie bialgebras is implemented by means…

Quantum Algebra · Mathematics 2009-10-31 Angel Ballesteros , Francisco J. Herranz , Preeti Parashar

Hilbert--Lie groups are Lie groups whose Lie algebra is a real Hilbert space whose scalar product is invariant under the adjoint action. These infinite-dimensional Lie groups are the closest relatives to compact Lie groups. Here we study…

Mathematical Physics · Physics 2024-11-12 Karl-Hermann Neeb , Francesco G. Russo

The general expression for the bicovariant bracket for odd generators of the external algebra on a Poisson-Lie group is given. It is shown that the graded Poisson-Lie structures derived before for $GL(N)$ and $SL(N)$ are the special cases…

High Energy Physics - Theory · Physics 2009-10-28 G. E. Arutyunov , P. B. Medvedev

Using crossed homomorphisms, we show that the category of weak representations (resp. admissible representations) of Lie-Rinehart algebras (resp. Leibniz pairs) is a left module category over the monoidal category of representations of Lie…

Representation Theory · Mathematics 2023-08-31 Yufeng Pei , Yunhe Sheng , Rong Tang , Kaiming Zhao

A bivariate representation of a complex simple Lie algebra is an irreducible representation having highest weight a combination of the first two fundamental weights. For a complex classical Lie algebra, we establish an expression for the…

Representation Theory · Mathematics 2018-09-14 Emilio A. Lauret , Fiorela Rossi Bertone

We bring a linkage from representation theory of Lie groups to homotopy theory for maps between flag manifolds. As applications we derive from representation theory abundant families of homotopy classes of maps between flag manifolds whose…

Algebraic Topology · Mathematics 2007-05-23 Haibao Duan

Motivated by positive energy representations, we classify those continuous central extensions of the compactly supported gauge Lie algebra that are covariant under a 1-parameter group of transformations of the base manifold.

Representation Theory · Mathematics 2021-08-10 Bas Janssens , Karl-Hermann Neeb

We introduce the notion of a generalized metric n-Leibniz algebra and show that there is a one-to-one correspondence between generalized metric n-Leibniz algebras and faithful generalized orthogonal representations of metric Lie algebras…

Rings and Algebras · Mathematics 2021-03-16 Li-Na Song , Rong Tang

The propose of this paper is to extend generalized representations of 3-Lie algebras to Hom-type algebras. We introduce the concept of generalized representation of multiplicative 3-Hom-Lie algebras, develop the corresponding cohomology…

Representation Theory · Mathematics 2019-05-31 Sami Mabrouk , Abdenacer Makhlouf , Sonia Massoud

For a Poisson manifold $M$ we develop systematic methods to compute its Picard group $Pic(M)$, i.e., its group of self Morita equivalences. We establish a precise relationship between $Pic(M)$ and the group of gauge transformations up to…

Differential Geometry · Mathematics 2016-04-11 Henrique Bursztyn , Rui Loja Fernandes

With the intent of laying the groundwork for a program that aims at explicitly describing the space of Cartan (i.e. multiplicative) connections on a general proper Lie groupoid, we begin to investigate the space of such connections in the…

Differential Geometry · Mathematics 2018-11-07 Giorgio Trentinaglia

We study the affine variety $L_{n}(\mathfrak{g})$ of Lie algebra representations, the collection of all homomorphisms from an arbitrary $n$-dimensional Lie algebra into a fixed real semi-simple Lie algebra $\mathfrak{g}$. Using techniques…

Representation Theory · Mathematics 2026-03-20 Bruna Mariana Braido da Silva Percinotti