This article is cited in 3 papers

MATHEMATICS

The focussing problem and the asymptotic behavior of the spectral function of the Laplace–Beltrami operator

V. M. Babich^a, B. M. Levitan<sup>b

a</sup> Leningrad Department of V. A. Steklov Institute of Mathematics, USSR Academy of Sciences
^b Lomonosov Moscow State University

UDC: 517.946

Presented: V. S. Vladimirov
Received: 10.04.1976

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