Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Spectral Properties of the Neumann-Poincaré Operator in 3D Elasticity. / Miyanishi, Yoshihisa; Rozenblum, Grigori.
в: International Mathematics Research Notices, Том 2021, № 11, 01.06.2021, стр. 8715-8740.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Spectral Properties of the Neumann-Poincaré Operator in 3D Elasticity
AU - Miyanishi, Yoshihisa
AU - Rozenblum, Grigori
PY - 2021/6/1
Y1 - 2021/6/1
N2 - We consider the adjoint double layer potential (Neumann-Poincaré (NP)) operator appearing in 3-dimensional elasticity. We show that the recent result about the polynomial compactness of this operator for the case of a homogeneous media follows without additional calculations from previous considerations by Agranovich et al., based upon pseudodifferential operators. Further on, we define the NP operator for the case of a nonhomogeneous isotropic media and show that its properties depend crucially on the character of nonhomogeneity. If the Lamé parameters are constant along the boundary, the NP operator is still polynomially compact. On the other hand, if these parameters are not constant, two or more intervals of continuous spectrum may appear, so the NP operator ceases to be polynomially compact. However, after a certain modification, it becomes polynomially compact again. Finally, we evaluate the rate of convergence of discrete eigenvalues of the NP operator to the tips of the essential spectrum.
AB - We consider the adjoint double layer potential (Neumann-Poincaré (NP)) operator appearing in 3-dimensional elasticity. We show that the recent result about the polynomial compactness of this operator for the case of a homogeneous media follows without additional calculations from previous considerations by Agranovich et al., based upon pseudodifferential operators. Further on, we define the NP operator for the case of a nonhomogeneous isotropic media and show that its properties depend crucially on the character of nonhomogeneity. If the Lamé parameters are constant along the boundary, the NP operator is still polynomially compact. On the other hand, if these parameters are not constant, two or more intervals of continuous spectrum may appear, so the NP operator ceases to be polynomially compact. However, after a certain modification, it becomes polynomially compact again. Finally, we evaluate the rate of convergence of discrete eigenvalues of the NP operator to the tips of the essential spectrum.
KW - теория упругости
KW - потенциал
KW - Спектр
UR - http://www.scopus.com/inward/record.url?scp=85116819443&partnerID=8YFLogxK
U2 - 10.1093/imrn/rnz341
DO - 10.1093/imrn/rnz341
M3 - Article
AN - SCOPUS:85116819443
VL - 2021
SP - 8715
EP - 8740
JO - International Mathematics Research Notices
JF - International Mathematics Research Notices
SN - 1073-7928
IS - 11
ER -
ID: 105206520