18 citations · 33 across the 5 of their papers we have counts for
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math.DG2012★ 1 cited
Remarks on J. Espinar's "Finite index operators on surfaces"
Pierre Bérard, Philippe Castillon
In this paper, we make some remarks on José Espinar's paper "Finite index operators on surfaces" [\texttt{arXiv:0911.3767}, to appear in Journal of Geometric Analysis (2011)].
math.SP2012★ 8 cited
Remarks on the boundary set of spectral equipartitions
Pierre Bérard, Bernard Helffer
Given a bounded open set in (or a compact Riemannian manifold with boundary), and a partition of by open sets , we consider the quantity $\max_j λ(ω…