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39 205 (0,102s)

Výsledek výzkumu

On holonomy of Weyl connections in Lorentzian signature

Holonomy algebras of Weyl connections in Lorentzian signature are classified. In particular, examples of Weyl connections with all possible holonomy algebras are constructed....

Pure mathematics

  • 2021
  • Jimp
  • Odkaz
Výsledek výzkumu

Classification of the Weyl tensor in higher dimensions

We discuss the algebraic classification of the Weyl tensor in higher-dimensional Lorentzian manifolds. This is done by characterizing algebraically special Weyl tensors by means of the existence of aligned null vec...

BA - Obecná matematika

  • 2004
  • Jx
Výsledek výzkumu

On the classification of the Weyl tensor in higher dimensions

We overview recently developed algebraic classification of the Weyl tensor in arbitrary dimension and discuss various applications.

BA - Obecná matematika

  • 2006
  • D
Výsledek výzkumu

Algebraic structure of Robinson-Trautman and Kundt geometries in arbitrary dimension

We investigate the Weyl tensor algebraic structure of a fully general family all Weyl scalars of various boost weights. This enables us to give a complete algebraic classification of the metrics in the cas...

BE - Teoretická fyzika

  • 2015
  • Jx
  • Odkaz
Výsledek výzkumu

Geometric realizations of affine Kac-Moody algebras

The goal of the present paper is to obtain new free field realizations of affine Kac-Moody algebras motivated by geometric representation theory for generalized flag manifolds of finite dimensional semisimple Lie groups. We provide an explic...

Pure mathematics

  • 2019
  • Jimp
  • Odkaz
Výsledek výzkumu

On cubature rules associated to weyl group orbit functions

to the Weyl group orbit functions, i.e. to the special cases of the Jacobi polynomials functions associated to the Weyl group orbit functions is presented and the link between the Weyl group orbit functions and the Jacobi ...

BA - Obecná matematika

  • 2016
  • Jx
  • Odkaz
Výsledek výzkumu

An algebraic approach to the Weyl groupoid

We unify the Kumjian-Renault Weyl groupoid construction with the Lawson-Lenz version of Exel's tight groupoid construction. We do this by utilising only a weak algebraic fragment of the C*-algebra structure, namely its *-se...

Pure mathematics

  • 2021
  • Jimp
  • Odkaz
Výsledek výzkumu

Connection Between Horizons and Algebraic Type

We study connections between both event and quasilocal horizons and the algebraic type of the Weyl tensor. The relation regarding spacelike future outer trapping horizon is analysed in four dimensions using double-null foliation....

BE - Teoretická fyzika

  • 2014
  • D
  • Odkaz
Výsledek výzkumu

Construction of representations of Poincaré group using Lie fields

associated with the Schrödinger representation of the Weyl algebra for n = 1, 2, and 3 and localization of the enveloping algebras associated with these Weyl algebras and the Poincaré algebras....

Pure mathematics

  • 2018
  • Jimp
  • Odkaz
Výsledek výzkumu

Classification of the Weyl tensor in higher dimensions and its applications

The algebraic classification of the Weyl tensor in higher dimensions is a natural generalization of the Petrov classification in four dimensions. We overview basic properties of the classification and discuss various applications....

BA - Obecná matematika

  • 2008
  • D
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