A.~Stern's analysis of the nodal sets of some families of spherical harmonics revisited - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2015

A.~Stern's analysis of the nodal sets of some families of spherical harmonics revisited

Résumé

In this paper, we revisit the analyses of Antonie Stern (1925) and Hans Lewy (1977) devoted to the construction of spherical harmonics with two or three nodal domains. Our method yields sharp quantitative results and a better understanding of the occurrence of bifurcations in the families of nodal sets.This paper is a natural continuation of our critical reading of A. Stern's results for Dirichlet eigenfunctions in the square, see arXiv:14026054.
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Dates et versions

hal-01026363 , version 1 (21-07-2014)
hal-01026363 , version 2 (19-11-2014)
hal-01026363 , version 3 (11-03-2015)
hal-01026363 , version 4 (02-07-2015)

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Pierre Bérard, Bernard Helffer. A.~Stern's analysis of the nodal sets of some families of spherical harmonics revisited. 2015. ⟨hal-01026363v3⟩
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