MATHEMATICS

Riesz means of biorthogonal expansions in eigen- and associated functions of nonselfadjoint extensions of the Laplace operator

Ya. Sh. Salimov<sup>ab

a</sup> Lomonosov Moscow State University
^b Azerbaijan Institute of Oil and Chemistry, Baku

UDC: 517.95

Presented: A. N. Tikhonov
Received: 04.10.1985

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