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arXiv · 1610.09738

Why are normal sub-Riemannian extremals locally minimizing?

Michał Jóźwikowski·Witold Respondek
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Abstract

It is well-known that normal extremals in sub-Riemannian geometry are curves which locally minimize the energy functional. Most proofs of this fact do not make, however, an explicit use of relations between local optimality and the geometry of the problem. In this paper, we provide a new proof of that classical result, which gives insight into direct geometric reasons of local optimality. Also the relation of the regularity of normal extremals with their optimality becomes apparent in our approach.

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Michał Jóźwikowski, Witold Respondek. 2017-04-03. Why are normal sub-Riemannian extremals locally minimizing?. https://doi.org/10.1016/j.difgeo.2018.06.005

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