Stability of spectral partitions and the Dirichlet-to-Neumann map
Stability of spectral partitions and the Dirichlet-to-Neumann map
复制标题
光谱分区和狄利克雷到诺依曼图的稳定性
DOI:
10.1007/s00526-022-02311-7
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发表时间:
2022
影响因子:
2.1
通讯作者:
Marzuola, J. L.
中科院分区:
文献类型:
--
作者:
Berkolaiko, G.;Canzani, Y.;Cox, G.;Marzuola, J. L.
The oscillation of a Laplacian eigenfunction gives a great deal of information about the manifold on which it is defined. This oscillation can be encoded in thenodal deficiency, an important geometric quantity that is notoriously hard to compute, or even estimate. Here we compare two recently obtained formulas for the nodal deficiency, one in terms of an energy functional on the space of equipartitions of the manifold, and the other in terms of a two-sided Dirichlet-to-Neumann map defined on the nodal set. We relate these two approaches by giving an explicit formula for the Hessian of the equipartition energy in terms of the Dirichlet-to-Neumann map. This allows us to compute Hessian eigenfunctions, and hence directions of steepest descent, for the equipartition energy in terms of the corresponding Dirichlet-to-Neumann eigenfunctions. Our results do not assume bipartiteness, and hence are relevant to the study of spectral minimal partitions.
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DOI:
10.1007/s12220-022-00984-2
发表时间:
2022
期刊:
The Journal of Geometric Analysis
影响因子:
--
作者:
Berkolaiko, G.;Cox, G.;Helffer, B.;Sundqvist, M. P.
通讯作者:
Sundqvist, M. P.
影响因子:
0.8
作者:
Matthias Hofmann;J. Kennedy;Delio Mugnolo;M. Plümer
通讯作者:
M. Plümer
影响因子:
1.2
作者:
Matthias Hofmann;J. Kennedy
通讯作者:
J. Kennedy
影响因子:
0.8
作者:
Pierre B'erard;B. Helffer;R. Kiwan
通讯作者:
R. Kiwan
DOI:
10.1512/iumj.2017.66.6129
发表时间:
2015
期刊:
arXiv: Analysis of PDEs
影响因子:
--
作者:
G. Cox;C. Jones;J. Marzuola
通讯作者:
J. Marzuola