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Examples and classification of Riemannian submersions satisfying a basic equality

Published online by Cambridge University Press:  17 April 2009

Bang-Yen Chen
Affiliation:
Department of Mathematics, Michigan State University, East Lansing, MI 48824–1027, United States of America e-mail: bychen@math.msu.edu
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Extract

In an earlier article we obtain a sharp inequality for an arbitrary isometric immersion from a Riemannian manifold admitting a Riemannian submersion with totally geodesic fibres into a unit sphere. In this article we investigate the immersions which satisfy the equality case of the inequality. As a by-product, we discover a new characterisation of Cartan hypersurface in S4.

Type
Research Article
Copyright
Copyright © Australian Mathematical Society 2005

References

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