Eigenfunctions with prescribed nodal sets

Alberto Enciso; Daniel Peralta-Salas

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arXiv · 1404.1039

Eigenfunctions with prescribed nodal sets

Alberto Enciso·Daniel Peralta-Salas

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Abstract

In this paper we consider the problem of prescribing the nodal set of low-energy eigenfunctions of the Laplacian. Our main result is that, given any separating closed hypersurface Σin a compact n-manifold M, there is a Riemannian metric on M such that the nodal set of its first nontrivial eigenfunction is Σ. We present a number of variations on this result, which enable us to show, in particular, that the first nontrivial eigenfunction can have as many non-degenerate critical points as one wishes.

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Alberto Enciso, Daniel Peralta-Salas. 2014-04-03. Eigenfunctions with prescribed nodal sets. https://arxiv.org/abs/1404.1039

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