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Eigenvalue Estimates Of Laplacians Defined By Fractal Measures, Sze-Man Ngai
Eigenvalue Estimates Of Laplacians Defined By Fractal Measures, Sze-Man Ngai
Department of Mathematical Sciences Faculty Presentations
We study various lower and upper estimates for the first eigenvalue of Dirichlet Laplacians defined by positive Borel measures on bounded open subsets of Euclidean spaces. These Laplacians and the corresponding eigenvalue estimates differ from classical ones in that the defining measures can be singular. By using properties of self-similar measures, such as Strichartz's second-order self-similar identities, we improve some of the eigenvalue estimates.