The Electronic Library of Mathematics
Mathematical Conference Proceedings

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Proceedings of the Summer School on

Differential Geometry

Coimbra, Portugal
September 3 - 7, 1999

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Editors

A.M. d'Azevedo Breda, F.J. Craveiro de Carvalho, J.M. Nunes da Costa, Bernd Wegner

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Copyright @ 1999 by Dep. de Matemática, Universidade de Coimbra, Portugal

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Contents

Preface

Sheila Carter:
Parallels and Push-outs of Immersed Manifolds

David Chillingworth:
Bifurcations, singularities and symmetries

Dirk Ferus:
Conformal Geometry of Surfaces in $S^4$ and Quaternions

Thomas Foertsch and Bernd Wegner:
Selected Topics in Singularities of Space-Times

J. P. Francoise:
Perturbation Theory of Overintegrable Differential Systems

Claudio Altafini:
A Matrix Lie Group of Carnot Type for Filiform Sub-Riemannian Structures and its Application to Control Systems in Chained Form

Mohamed Belkhelfa:
Parallel and Minimal Surfaces in Heisenberg Space

Sheila Carter and F. J. Craveiro de Carvalho:
On Indicatrices

Ildefonso Castro:
The Lagrangian Version of a Theorem of J. B. Meusnier

Ines Cruz:
Degeneracy of Some Lie Algebras

Rui Loja Fernandes:
Contravariant Connections on Poisson Manifolds

J. M. Nunes da Costa:
Some Remarks on the Poisson-Nijenhuis and the Jacobi Structures

José A. Pastor:
Contact Theory for Spacelike Hypersurfaces with Constant Mean Curvature in the Minkowski Space

Fani Petalidou:
Modeles Locaux de Structures de Poisson-Nijenhuis en Dimension Impaire

Paul Popescu and Marcela Popescu:
Embedding Almost Lie Structures

Marcela Popescu and Paul Popescu:
Projectable Non-linear Connections and Foliations

Giorgio Valli and Isabel M. C. Salavessa:
Minimal submanifolds of Kähler-Einstein manifolds without complex directions and of half dimension