Abstract
We show that, for every principal -bundle over a complete Riemannian manifold of nonpositive Ricci curvature, if the projection of the -bundle is biharmonic, then it is harmonic.
Citation
Hajime Urakawa. "Biharmonic Maps on Principal -Bundles over Complete Riemannian Manifolds of Nonpositive Ricci Curvature." Michigan Math. J. 68 (1) 19 - 31, April 2019. https://doi.org/10.1307/mmj/1547089468
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