The spectrum of the Laplacian on forms.
@article{Charalambous2016TheSO, title={The spectrum of the Laplacian on forms.}, author={Nelia Charalambous and Zhiqin Lu}, journal={arXiv: Differential Geometry}, year={2016} }
In this article we prove a generalization of Weyl's criterion for the spectrum of a self-adjoint nonnegative operator on a Hilbert space. We will apply this new criterion in combination with Cheeger-Fukaya-Gromov and Cheeger-Colding theory to study the $k$-form essential spectrum over a complete manifold with vanishing curvature at infinity or asymptotically nonnegative Ricci curvature.
In addition, we will apply the generalized Weyl criterion to study the variation of the spectrum of a self…
2 Citations
The spectrum of continuously perturbed operators and the Laplacian on forms
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The spectrum of the Laplacian on forms over flat manifolds
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In this article we prove that the spectrum of the Laplacian on $k$-forms over a noncompact flat manifold is always a connected closed interval of the nonnegative real line. The proof is based on a…
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