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arXiv · 1306.4776

The exponential map of a $C^{1,1}$-metric

Michael Kunzinger·Roland Steinbauer·Milena Stojkovic
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Abstract

Given a pseudo-Riemannian metric of regularity $C^{1,1}$ on a smooth manifold, we prove that the corresponding exponential map is a bi-Lipschitz homeomorphism locally around any point. We also establish the existence of totally normal neighborhoods in an appropriate sense. The proofs are based on regularization, combined with methods from comparison geometry.

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Michael Kunzinger, Roland Steinbauer, Milena Stojkovic. 2013-06-20. The exponential map of a $C^{1,1}$-metric. https://arxiv.org/abs/1306.4776

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