期刊名称：International Journal of Mathematics and Mathematical Sciences
印刷版ISSN：0161-1712
电子版ISSN：1687-0425
出版年度：1995
卷号：18
DOI：10.1155/S0161171295000305
出版社：Hindawi Publishing Corporation
摘要：This paper is devoted to asymptotic formulas for functions related with the spectrum
of the standard Laplace operator in two and three dimensional bounded doubly connected domains
with impedance boundary conditions, where the impedances are assumed to be positive functions.
Moreover, asymptotic expressions for the difference of eigenvalues related to impedance boundary
value problems with different impedances are derived. Further results may be obtained.
