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 Izv. RAN. Ser. Mat., 2011, Volume 75, Issue 5, Pages 139–176 (Mi izv4258)

On the second term in the Weyl formula for the spectrum of the Laplace operator on the two-dimensional torus and the number of integer points in spectral domains

D. A. Popov

A. N. Belozersky Institute of Physico-Chemical Biology, M. V. Lomonosov Moscow State University

Abstract: We construct Liouville metrics on the two-dimensional torus for which the asymptotic behaviour of the second term in the Weyl formula is evaluated explicitly. We prove the instability of the second term in this formula with respect to small deformations (in the $C^1$ metric) of a Liouville metric, and establish the absence of power reduction in the Hörmander estimate on the class of closed manifolds with smooth metric in the case of integrable geodesic flow and the zero measure of the set of closed geodesics in the subspace of unit spheres of the cotangent bundle.

Keywords: Laplace operator, spectrum, Weyl formula, integer points, geodesic flow.

DOI: https://doi.org/10.4213/im4258

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English version:
Izvestiya: Mathematics, 2011, 75:5, 1007–1045

Bibliographic databases:

UDC: 517.984.5+511.338
MSC: Primary 11P21, 35P20; Secondary 35J05, 47F05, 58G50

Citation: D. A. Popov, “On the second term in the Weyl formula for the spectrum of the Laplace operator on the two-dimensional torus and the number of integer points in spectral domains”, Izv. RAN. Ser. Mat., 75:5 (2011), 139–176; Izv. Math., 75:5 (2011), 1007–1045

Citation in format AMSBIB
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