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arXiv · 0711.1229

A Zoll counterexample to a geodesic length conjecture

Florent Balacheff·Christopher Croke·Mikhail G. Katz
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Abstract

We construct a counterexample to a conjectured inequality L<2D, relating the diameter D and the least length L of a nontrivial closed geodesic, for a Riemannian metric on the 2-sphere. The construction relies on Guillemin's theorem concerning the existence of Zoll surfaces integrating an arbitrary infinitesimal odd deformation of the round metric. Thus the round metric is not optimal for the ratio L/D.

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BibTeXRIS

Florent Balacheff, Christopher Croke, Mikhail G. Katz. 2007-11-08. A Zoll counterexample to a geodesic length conjecture. https://arxiv.org/abs/0711.1229

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