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Publicações

Publicações por Alberto Pinto

2002

Smoothness of holonomies for codimension 1 hyperbolic dynamics

Autores
Pinto, AA; Rand, DA;

Publicação
BULLETIN OF THE LONDON MATHEMATICAL SOCIETY

Abstract
Hyperbolic invariant sets A of C1+gamma diffeomorphisms where either the stable or unstable leaves are 1-dimensional are considered in this paper, Under the assumption that the A has local product structure, the authors prove that the holonomies between the 1-dimensional leaves are C1+alpha for some 0 < alpha < 1.

2002

Teichmuller spaces and HR structures for hyperbolic surface dynamics

Autores
Pinto, AA; Rand, DA;

Publicação
ERGODIC THEORY AND DYNAMICAL SYSTEMS

Abstract
We construct a Teichmuller space for the C1+-conjugacy classes of hyperbolic dynamical systems on surfaces. After introducing the notion of an HR structure which associates an affine structure with each of the stable and unstable laminations, we show that there is a one-to-one correspondence between these HR structures and the C1+-conjugacy classes. As part of the proof we construct a canonical representative dynamical system for each HR structure. This has the smoothest holonomies of any representative of the corresponding C1+-conjugacy class. Finally, we introduce solenoid functions and show that they provide a good Teichmuller space.

2005

Rigidity of hyperbolic sets on surfaces

Autores
Pinto, AA; Rand, DA;

Publicação
JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES

Abstract
Given a hyperbolic invariant set of a diffeomorphism on a surface, it is proved that, if the holonomies are sufficiently smooth, then the diffeomorphism on the hyperbolic invariant set is rigid in the sense that it is C1+ conjugate to a hyperbolic affine model.

2011

Anosov and Circle Diffeomorphisms

Autores
Almeida, JP; Fisher, AM; Pinto, AA; Rand, DA;

Publicação
DYNAMICS, GAMES AND SCIENCE I

Abstract
We present an infinite dimensional space of C1+ smooth conjugacy classes of circle diffeomorphisms that are C1+ fixed points of renormalization. We exhibit a one-to-one correspondence between these C1+ fixed points of renormalization and C1+ conjugacy classes of Anosov diffeomorphisms.

2011

A Tourist's Choice Model

Autores
Brida, J; Defesa, MJ; Faias, M; Pinto, AA;

Publicação
DYNAMICS, GAMES AND SCIENCE I

Abstract
We present a tourism model where the choice of a resort by a tourist depends not only on the product offered in the resort, but also on the characteristics of the other tourists staying in the resort. In order to explore the effect of the types of the tourists in the allocation of tourists across resorts, we introduce a game theoretical model and describe the relevant Nash equilibria.

2011

Price-Setting Dynamical Duopoly with Incomplete Information

Autores
Ferreira, FA; Ferreira, F; Pinto, AA;

Publicação
NONLINEAR SCIENCE AND COMPLEXITY

Abstract
We consider a price competition in a duopoly with substitutable goods, linear and symmetric demand. There is a firm (F-1) that chooses first the price p(1) of its good; the other firm (F-2) observes p(1) and then chooses the price p(2) of its good. The conclusions of this price-setting dynamical duopoly are substantially altered by the presence of either differentiated goods or asymmetric information about rival's production costs. In this paper, we consider asymmetric information about rival's production costs. We do ex-ante and ex-post analyses of firms' profits and market prices. We compare the ex-ante firms' expected profits with the ex-post firms' profits.

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