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The Monge-Ampère equation and warped products of higher rank

Part of: Global differential geometry Elliptic equations and systems

Published online by Cambridge University Press:  09 April 2009

Stefan Bechtluft-Sachs  and
Evangelia Samiou
Stefan Bechtluft-Sachs
Affiliation:
Department of MathematicsAmerican University of BeirutP.O. Box 11-0236 Riad El Solh Beirut 1107 2020Lebanonsb42.aub.edu.lb
Evangelia Samiou
Affiliation:
University of CyprusDepartment of Mathematics and Statistics P.O. Box 20537 1678 Nicosia [email protected]
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Abstract

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We show that a warped product Mf = nf has higher rank and nonpositive curvature if and only if f is a convex solution of the Monge-Ampère equation. In this case we show that M contains a Euclidean factor.

MSC classification

Secondary: 53C21: Methods of Riemannian geometry, including PDE methods; curvature restrictions 53C24: Rigidity results 35J60: Nonlinear elliptic equations
Type
Research Article
Information
Journal of the Australian Mathematical Society , Volume 83 , Issue 1 , August 2007 , pp. 11 - 16
Copyright
Copyright © Australian Mathematical Society 2007

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