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On hearing the shape of a bounded domain with Robin boundary conditions
Faculty
Science
Year:
2000
Type of Publication:
Article
Pages:
95-108
Authors:
ZAYED, EME
DOI:
10.1093/imamat/64.1.95
Journal:
IMA JOURNAL OF APPLIED MATHEMATICS OXFORD UNIV PRESS
Volume:
64
Research Area:
Mathematics
ISSN
ISI:000086140100006
Keywords :
, hearing , shape , , bounded domain with Robin
Abstract:
The asymptotic expansions of the trace of the heat kernel theta(t) = Sigma(j=1)(infinity) exp(-t lambda j) for small positive t, where \{lambda j\}(j=1)(infinity) are the eigenvalues of the negative Laplacian -Delta(n) = -Sigma(k=1)(n) (partial derivative/partial derivative x(k))(2) in R-n (n = 2 or 3), are studied for a general multiply connected bounded domain Omega which is surrounded by simply connected bounded domains Omega(i) with smooth boundaries partial derivative Omega(i)(i = 1,...,m), where smooth functions gamma(i)(i = 1, ..., m) are assuming the Robin boundary conditions (partial derivative/partial derivative n(i) + gamma(i))theta = 0 on partial derivative Omega(i). Here partial derivative/partial derivative n(i) denote differentiations dong the inward-pointing normals to partial derivative Omega(i)(i = 1, ...,m). Some applications of an ideal gas enclosed in the multiply connected bounded container with Neumann or Robin boundary conditions are given.
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