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math.DG2018
On the First eigenvalue of the Laplace operator for Compact Spacelike submanifolds in Lorentz-Minkowski Spacetime
Francisco J. Palomo, Alfonso Romero
By means of a family of counter-examples, it is shown that the Reilly upper bound for the first eigenvalue of the Laplace operator for a compact submanifold in Euclidean space does…
math.DG2018★ 6 cited
Affine Connections on 3-Sasakian Homogeneous Manifolds
Cristina Draper, Miguel Ortega, Francisco J. Palomo
The space of invariant affine connections on every -Sasakian homogeneous manifold of dimension at least is described. In particular, the remarkable subspaces of invariant af…