Results 31 to 40 of about 1,304,850 (179)

Expansion in finite simple groups of Lie type [PDF]

open access: yesJournal of the European Mathematical Society, 2015
We show that random Cayley graphs of finite simple (or semisimple) groups of Lie type of fixed rank are expanders. The proofs are based on the Bourgain-Gamburd method and on the main result of our companion paper [BGGT].
Emmanuel Breuillard   +3 more
openaire   +3 more sources

Compact Lie Groups, Generalised Euler Angles, and Applications

open access: yesUniverse, 2022
This is mainly a review of an intense 15-year long collaboration between the authors on explicit realisations of compact Lie groups and their applications.
Sergio Luigi Cacciatori, Antonio Scotti
doaj   +1 more source

On E-functions of Semisimple Lie Groups

open access: yes, 2011
We develop and describe continuous and discrete transforms of class functions on a compact semisimple, but not simple, Lie group $G$ as their expansions into series of special functions that are invariant under the action of the even subgroup of the Weyl
Hrivnák J   +10 more
core   +1 more source

Disjointness of a Simple Matrix Lie Group and Its Lie Algebra

open access: yesVietnam Journal of Mathematics, 2023
Let $G$ be a connected closed subgroup of $\mathrm{GL}_n(\mathbb{C})$ which is simple as a Lie group and which acts irreducibly on $\mathbb{C}^n$. Regarding both $G$ and its Lie algebra $\mathfrak{g}$ as subsets of $M_n(\mathbb{C})$, we have $G\cap \mathfrak{g}\neq\emptyset$ if and only if $G$ is a classical group and $\mathbb{C}^n$ is a minuscule ...
openaire   +3 more sources

Classification of harmonic homomorphisms between Riemannian three-dimensional unimodular Lie groups [PDF]

open access: yesArab Journal of Mathematical Sciences
Purpose – The purpose of this study is to classify harmonic homomorphisms ϕ : (G, g) → (H, h), where G, H are connected and simply connected three-dimensional unimodular Lie groups and g, h are left-invariant Riemannian metrics.
Zagane Abdelkader   +2 more
doaj   +1 more source

Combinatorial descriptions of the crystal structure on certain PBW bases [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2020
Lusztig's theory of PBW bases gives a way to realize the crystal B(∞) for any simple complex Lie algebra where the underlying set consists of Kostant partitions. In fact, there are many different such realizations, one for each reduced expression for the
Ben Salisbury   +2 more
doaj   +1 more source

On the Unification of Gauge Symmetries in Theories with Dynamical Symmetry Breaking

open access: yes, 2005
We analyze approaches to the partial or complete unification of gauge symmetries in theories with dynamical symmetry breaking. Several types of models are considered, including those that (i) involve sufficient unification to quantize electric charge ...
Neil D. Christensen   +2 more
core   +1 more source

A Classification of Compact Cohomogeneity One Locally Conformal Kähler Manifolds

open access: yesMathematics
In this paper, we apply a result of the classification of a compact cohomogeneity one Riemannian manifold with a compact Lie group G to obtain a classification of compact cohomogeneity one locally conformal Kähler manifolds.
Daniel Guan
doaj   +1 more source

Doubled aspects of generalised dualities and integrable deformations

open access: yesJournal of High Energy Physics, 2019
The worldsheet theories that describe Poisson-Lie T-dualisable σ-models on group manifolds as well as integrable η, λ and β-deformations provide examples of ℰ-models.
Saskia Demulder   +2 more
doaj   +1 more source

RG flow of integrable E-models

open access: yesPhysics Letters B, 2021
We compute the one- and two-loop RG flow of integrable σ-models with Poisson-Lie symmetry. They are characterised by a twist function with 2N simple poles/zeros and a double pole at infinity.
Falk Hassler
doaj   +1 more source

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