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Weak Riemannian manifolds from finite index subfactors
(Springer, 2008-10)
Let N ⊂ M be a finite Jones' index inclusion of II1 factors and denote by UN ⊂ UM their unitary groups. In this article, we study the homogeneous space UM/UN, which is a (infinite dimensional) differentiable manifold, ...
Teoría de einstein-maxwell en ads3: cargas conservdas, agugeros negros y estructura asintótica
(2016)
La presente tesis explora y analiza la teoría de Einstein minimalmente acoplada a un campo de Maxwell en un espaciotiempo de tres dimensiones con constante cosmológica negativa. Las soluciones de esta teroría poseen un ...
Entanglement entropy and superselection sectors. Part I. Global symmetries
(Springer, 2020-02)
Some quantum field theories show, in a fundamental or an effective manner, an alternative between a loss of duality for algebras of operators corresponding to complementary regions, or a loss of additivity. In this latter ...
Teoría de Einstein-Maxwell en Ads3 cargas conservadas, agujeros negros y estructura asintótica
(Universidad de Concepción.Facultad de Ciencias Físicas y MatemáticasDepartamento de Física., 2016)
La presente tesis explora y analiza la teoría de Einstein minimalmente acoplada a un campo de Maxwell en un espacio tiempo de tres dimensiones con constante cosmológica negativa. Las soluciones de esta teoría poseen un ...
Harmonic Hierarchies for Polynomial Optimization on Compact Gelfand Pairs
(Universidad de los AndesMaestría en MatemáticasFacultad de CienciasDepartamento de Matemáticas, 2022-11-15)
The main topic of this thesis is a method of polynomial optimization on the unit sphere through hierarchies originating from harmonic analysis and representation theory. A graded optimization hierarchy for optimizing a ...
Self-Triggering Based on Lyapunov with Adaptive Control Law for WNCS
(Institute of Electrical and Electronics Engineers, 2014-10)
This paper addresses the use of Lyapunov functions to self-triggering control implementation. In order to do this a condition, which comes from a sampling technique named Lyapunov sampling, is proposed. The results show ...
The sigma-isotypic decomposition and the sigma-index of reversible-equivariant systems
(ELSEVIER SCIENCE BVAMSTERDAM, 2012)
This work is concerned with dynamical systems in presence of symmetries and reversing symmetries. We describe a construction process of subspaces that are invariant by linear Gamma-reversible-equivariant mappings, where ...
On state representations of nonlinear implicit systems
(TAYLOR & FRANCIS LTD, 2010)
This work considers a semi-implicit system A, that is, a pair (S, y), where S is an explicit system described by a state representation (x)over dot(t) = f(t, x(t), u(t)), where x(t) is an element of R(n) and u(t) is an ...
Some remarks on static-feedback linearization for time-varying systems
(PERGAMON-ELSEVIER SCIENCE LTD, 2008)
This work summarizes some results about static state feedback linearization for time-varying systems. Three different necessary and sufficient conditions are stated in this paper. The first condition is the one by [Sluis, ...