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arXiv · 2611.03568

Flexibility of Laplace-Beltrami eigenfunctions under metric variation

Andrei Agrachev·Nicola Da Ponte·Antonio Lerario·Matteo Testa
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Abstract

We study the surjectivity of the differential of the Laplace-Beltrami operator with respect to the metric parameter. We use the obtained results to prove that every small deformation of a nonconstant eigenfunction can be realized with a small perturbation of the metric. As a consequence, we prove that every generic property of smooth functions which is invariant under multiplication by a nonzero scalar is generic for eigenfunctions of the Laplace-Beltrami operator, extending a result by Uhlenbeck.

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Andrei Agrachev, Nicola Da Ponte, Antonio Lerario, Matteo Testa. 2026-11-02. Flexibility of Laplace-Beltrami eigenfunctions under metric variation. https://arxiv.org/abs/2611.03568

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