Discrete and Continuous Dynamical Systems

Volume: 17, Number: 2, February 2007

Table of Contents:
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Title:
 Preface
Pages : i - ii
Author(s):
 		Daniel Smania,  Ali Tahzibi and Marcelo Viana

Title:
 Pseudo-orbit shadowing in the $C^1$ topology
Pages : 223 - 245
Author(s):
 		Flavio Abdenur and Lorenzo J. Díaz

Title:
 Hopf bifurcation at infinity for planar vector fields
Pages : 247 - 258
Author(s):
 		Begoña Alarcón,  Víctor Guíñez and Carlos Gutierrez

Title:
 Nonexistence of limit cycles for a class of structurally stable quadratic vector fields
Pages : 259 - 270
Author(s):
 		J. C. Artés,  Jaume Llibre and J. C. Medrado

Title:
 Sub-actions and maximizing measures for one-dimensional transformations with a critical point
Pages : 271 - 280
Author(s):
 		Flávia M. Branco

Title:
 Hartman-Grobman theorems along hyperbolic stationary trajectories
Pages : 281 - 292
Author(s):
 		Edson A. Coayla-Teran,  Salah-Eldin A. Mohammed and Paulo Régis C. Ruffino

Title:
 Codimension two umbilic points on surfaces immersed in $R^3$
Pages : 293 - 308
Author(s):
 		Jorge Sotomayor and Ronaldo Garcia

Title:
 Local and global phase portrait of equation $\dot z=f(z)$
Pages : 309 - 329
Author(s):
 		Antonio Garijo,  Armengol Gasull and Xavier Jarque

Title:
 On periodic orbits of polynomial relay systems
Pages : 331 - 347
Author(s):
 		Alain Jacquemard and Weber Flávio Pereira

Title:
 Geometric properties of the integral curves of an implicit differential equation
Pages : 349 - 364
Author(s):
 		Farid Tari

Title:
 A simple computable criteria for the existence of horseshoes
Pages : 365 - 370
Author(s):
 		Salvador Addas-Zanata

Title:
 Semicontinuity of entropy, existence of equilibrium states and continuity of physical measures
Pages : 371 - 386
Author(s):
 		Vítor Araújo

Title:
 Polynomial inverse integrating factors for polynomial vector fields
Pages : 387 - 395
Author(s):
 		Antoni Ferragut,  Jaume Llibre and Adam Mahdi

Title:
 A remark on an eigenvalue condition for the global injectivity of differentiable maps of $R^2$
Pages : 397 - 402
Author(s):
 		Carlos Gutierrez and Nguyen Van Chau

Title:
 Cohomology and subcohomology problems for expansive, non Anosov geodesic flows
Pages : 403 - 422
Author(s):
 		Artur O. Lopes,  Vladimir A. Rosas and Rafael O. Ruggiero

Title:
 On the Burnside problem in Diff(M)
Pages : 423 - 439
Author(s):
 		Julio C. Rebelo and Ana L. Silva

Title:
 Putting a boundary to the space of Liénard equations
Pages : 441 - 448
Author(s):
 		Robert Roussarie