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Doctoral Thesis
DOI
https://doi.org/10.11606/T.55.2016.tde-28072016-142742
Document
Author
Full name
Eber Daniel Chuño Vizarreta
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2016
Supervisor
Committee
Mencattini, Igor (President)
Brandão, Daniel Smania
Cabrera, Alejandro
Forger, Frank Michael
Jardim, Marcos Benevenuto
Title in Portuguese
Sobre reticulados de Coxeter-Toda
Keywords in Portuguese
Aplicação do pentagrama
Colchetes de Poisson de Faybusovich-Gekhman
Networks com pesos
Reticulados de Coxeter-Toda
Variedades de Poisson
Abstract in Portuguese
Esse trabalho visa a investigar a estrutura bi-Hamiltoniana de uma classe de sistemas dinâmicos. Depois de introduzir as ferramentas necessárias, a saber, as noções de variedade de Poisson, de grupo de PoissonLieedenetworknodiscoenoanêl,introduziremosossistemasdinâmicos relevantes nessa dissertação, chamados de reticulados de Coxeter-Toda. Esses sistemas dinâmicos, cujo espaço de fase pode ser identicado com umoportunoquocientedeumacéluladupladeCoxeter-Bruhatdogrupo linear geral, são obtidos por redução do sistema de Toda em GLn. Na parte nal do presente trabalho apresentaremos alguns resultados relacionado à um sistema dinâmico discreto chamado de aplicação do pentagrama, o qual pode ser obtido através uma oportuna discretização do sistema dinâmico de Boussinesq.
Title in English
On Coxeter-Toda lattices
Keywords in English
Coxeter-Toda lattices
Faybusovich-Gekhman Posson brackets
Pentagram map
Poisson manifolds
Weighted networks
Abstract in English
This work aims to study the bi-Hamiltonian structure of a class of dynamical systems. After introducing the relevant tools, namely the notions of Poisson manifold, Poisson-Lie group and of network dened in a disc and in an annulus, we will introduce the dynamical systems of interest for this dissertation, i.e., the Coxeter-Toda lattices. These dynamical systems, whose phase-space can be identied with a suitable quotient of a Coxeter double Bruhat cell of the general linear group, are obtained by reduction starting from the Toda ow on GLn. In the nal part of the present work will be presented some results concerning a discrete integrable system close to the so called Pentagram map, which is a discretization of the Boussinesq dynamical system..
 
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Publishing Date
2016-07-28
 
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