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C2 densely the 2-sphere has an elliptic closed geodesic

Published online by Cambridge University Press:  18 October 2004

GONZALO CONTRERAS
Affiliation:
CIMAT, PO Box 402, 36.000 Guanajuato, GTO, Mexico (e-mail: [email protected])
FERNANDO OLIVEIRA
Affiliation:
Departamento de Matematica, Instituto de Ciencias Exatas, Univesidade Federal de Minas Gerais, Av. Antonio Carlos 6627, Caixa Postal 702, 30161-970 Belo Horizonte MG, Brazil (e-mail: [email protected])

Abstract

We prove that a Riemannian metric on the 2-sphere or the projective plane can be C2 approximated by a $C^\infty$ metric whose geodesic flow has an elliptic closed geodesic.

Type
Research Article
Copyright
© 2004 Cambridge University Press

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