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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(online) ISSN 0002-9939(print)


The interval of resolvent-positivity
for the biharmonic operator

Author: Michael Ulm
Journal: Proc. Amer. Math. Soc. 127 (1999), 481-489
MSC (1991): Primary 34L40, 35B50, 47A10
MathSciNet review: 1468205
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Abstract | References | Similar Articles | Additional Information

Abstract: For an operator $A$ on a Banach lattice we examine the interval on the real line for which the resolvent $\left( \lambda - A \right)^{-1}$ is positive. This positivity interval is then explicitly calculated for the biharmonic operator $A f = - f''''$ with three different boundary conditions.

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Additional Information

Michael Ulm
Affiliation: Abteilung Mathematik V, Universität Ulm, D-89069 Ulm, Germany

PII: S 0002-9939(99)04556-6
Keywords: Biharmonic operator, resolvent-positivity
Received by editor(s): April 19, 1996
Received by editor(s) in revised form: May 22, 1997
Communicated by: Palle E. T. Jorgensen
Article copyright: © Copyright 1999 American Mathematical Society

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