Research Articles 

Local structural stability of actions of Rⁿ on n-manifolds
J. L. Arraut

Carlos Maquera

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9

Correction to "Blow-up directions at space infinity for solutions of semilinear heat equations" 23 (2005), 9-28.
Yoshikazu Giga

Noriaki Umeda

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19

On a Class of Topological Groups
Dinamérico P. Pombo Jr.

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25

A remark on the geometry of the Gowers space
Luis A R Grados

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35

Gain in regularity for a coupled nonlinear SchrÄodinger system
Juan Carlos Ceballos

Mauricio Sepúlveda

Octavio Vera Villagrán

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41

On Some Low Separation Axioms In Bitopological Spaces  
M. Caldas

S. Jafari

S. A. Ponmani

M. L. Thivagar

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69

Essays

Transformaçõeses conformes de algumas regiões duplamente conexas em anel
Ludmila Bourchtein

Adriana Neumann de Oliveira

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79

Lyapunov-type numbers for Poincaré maps
K.D. Edoh

J. Lorenz

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89

Funções Trigonométricas Definidas sobre Corpos Reais Fechados
Luciano Panek

Osvaldo Germano do Rocio

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97