Abstract
The question of the preservation of discreteness of the spectrum of the Laplacian acting in a space of differential forms under the cutting and gluing of manifolds reduces to the same problem for compact solvability of the operator of exterior derivation. Along these lines, we give some conditions on a cut Y dividing a Riemannian manifold X into two parts X + and X − under which the spectrum of the Laplacian on X is discrete if and only if so are the spectra of the Laplacians on X + and X −.
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Original Russian Text Copyright © 2006 Kuz’minov V. I. and Shvedov I. A.
The authors were supported by the State Maintenance Program for the Leading Scientific Schools of the Russian Federation (Grant NSh-311.2003.1).
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Translated from Sibirskiĭ Matematicheskiĭ Zhurnal, Vol. 47, No. 3, pp. 557–574, May–June, 2006.
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Kuz’minov, V.I., Shvedov, I.A. An addition theorem for the manifolds with the Laplacian having discrete spectrum. Sib Math J 47, 459–473 (2006). https://doi.org/10.1007/s11202-006-0058-x
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DOI: https://doi.org/10.1007/s11202-006-0058-x