V. A. Il'in, Sh. A. Alimov, “Conditions for the convergence of spectral decompositions that correspond to self-adjoint extensions of elliptic operators. I. Self-adjoint extension of the Laplace operator with a point spectrum”, Differ. Uravn., 1971, Volume 7, Number 4,Pages <nobr>670

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Partial Differential Equations

Conditions for the convergence of spectral decompositions that correspond to self-adjoint extensions of elliptic operators. I. Self-adjoint extension of the Laplace operator with a point spectrum

V. A. Il'in, Sh. A. Alimov

Lomonosov Moscow State University

UDC: 517.518.45.517.95

Received: 28.12.1970