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A class of 3-dimensional manifolds with bounded first eigenvalue on 1-forms |
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| Authors: | Giovanni Gentile |
| Affiliation: | Department of Mathematics, ETH-Zentrum, HG G34, CH 8092 Zurich, Switzerland |
| Abstract: | Let  be the framebundle over an oriented,  Riemannian surface  . Denote by  the first nonzero eigenvalue of the Laplace operator acting on differential forms of degree 1. We prove that  for all  with canonical metrics  of volume 1. |
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