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A method to find generators of a semi-simple Lie group via the topology of its flag manifolds
(2017-10-01)
In this paper we continue to develop the topological method to get semigroup generators of semi-simple Lie groups. Consider a subset Γ ⊂ G that contains a semi-simple subgroup G1 of G. If one can show that Γ does not leave ...
Where are compact groups in the local Universe?
(EDP Sciences, 2015-06)
Aims. The purpose of this work is to perform a statistical analysis of the location of compact groups in the Universe from observational and semi-analytical points of view. Methods. We used the velocity-filtered compact ...
Fossil groups in the Millennium simulation: From the brightest to the faintest galaxies during the past 8 Gyr
(EDP Sciences, 2016-02)
Aims. We investigate the evolution of bright and faint galaxies in fossil and non-fossil groups. Methods. We used mock galaxies constructed based on the Millennium run simulation II. We identified fossil groups at redshift ...
A qualitative method to analyze collaborative patterns of virtual groups
This study aims to describe a qualitative method to analyze different patterns of organization that students show during their interaction in a virtual group. Literature review has shown that collaborative patterns have a ...
Methods of analysis of nonconmutative groups
(2018-03-04)
RESUMEN:
Es el objetivo de esta tesis desarrollar algoritmos o métodos, que explotan las propiedades de los grupos no conmutativos y proporcionan información local rel¬evante sobre la estructura geométrica de grupos así ...
Using clustering methods to deal with high number of alternatives on Group Decision Making
Novel Group Decision Making methods and Web 2.0 have augmented the quantity of data that experts have to discuss about. Nevertheless, experts are only capable of dealing with a reduced set of information. In this paper, a ...
Group theoretical analysis of a quantum-mechanical three-dimensional quartic anharmonic oscillator
(Academic Press Inc Elsevier Science, 2015-05)
This paper illustrates the application of group theory to a quantum-mechanical three-dimensional quartic anharmonic oscillator with Oh symmetry. It is shown that group theory predicts the degeneracy of the energy levels ...
Improving Hickson-like compact group finders in redshift surveys: An implementation in the SDSS
(EDP Sciences, 2018-10)
In this work we present an algorithm to identify compact groups (CGs) that closely follows Hickson's original aim and that improves the completeness of the samples of compact groups obtained from redshift surveys. Methods. ...
Discrete generator coordinate: Symmetry restoration in finite-dimensional spaces
(1999-12-01)
Group theoretical-based techniques and fundamental results from number theory are used in order to allow for the construction of exact projectors in finite-dimensional spaces. These operators are shown to make use only of ...