A proof of the Faber-Krahn inequality for the first eigenvalue of thep-Laplacian |
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Authors: | Tilak Bhattacharya |
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Institution: | (1) Indian Statistical Institute, 7 S.J.S. Sansanwal Marg, 110016 New Delhi, India |
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Abstract: | Summary In this work we present an elementary proof of the Faber-Krahn inequality for the first eigenvalue of the p-Laplacian on bounded
domains in ℝn. Let λ1 be the first eigenvalue and λ
1
*
be the first eigenvalue for the ball of the same volume. Then we show that λ1=λ
1
*
iff the domain is a ball. Our proof makes considerable use of the corresponding Talenti's inequality and some well known
properties of the first eigenfunction.
Entrata in Redazione il 20 aprile 1998. |
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Keywords: | |
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