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EIGENVALUES AND EIGENFUNCTIONS OF METRIC MEASURE MANIFOLDS

Published online by Cambridge University Press:  20 August 2001

YUXIN GE
Affiliation:
C.M.L.A., E.N.S de Cachan, 61 avenue du Président Wilson, 94235 Cachan Cedex, [email protected] and Département de Mathématiques, Faculté de Sciences et Technologie, Université Paris XII-Val de Marne, 61 avenue du Général de Gaulle, 94010 Crétail Cedex, France
ZHONGMIN SHEN
Affiliation:
Department of Mathematical Sciences, IUPUI, Indianapolis, IN 46202-3216, [email protected]
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Abstract

In this paper we study the eigenvalues and eigenfunctions of metric measure manifolds. We prove that any eigenfunction is $C^{1,\alpha}$ at its critical points and $C^{\infty}$ elsewhere. Moreover, the eigenfunction corresponding to the first eigenvalue in the Dirichlet problem does not change sign. We also discuss the first eigenvalue, the Sobolev constants and their relationship with the isoperimetric constants. 2000 Mathematics Subject Classification: 47J05, 47J10, 53C60, 58E05, 58C40.

Type
Research Article
Copyright
2001 London Mathematical Society

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