Geodesic
On the emptiness criteria for the discrete spectrum of the Dirichlet problem for the equation
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 49 (2009) no. 2, pp. 288-292 
M. D. Malykh. On the emptiness criteria for the discrete spectrum of the Dirichlet problem for the equation. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 49 (2009) no. 2, pp. 288-292. http://geodesic.mathdoc.fr/item/ZVMMF_2009_49_2_a6/
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     title = {On the emptiness criteria for the discrete spectrum of the {Dirichlet} problem for the equation},
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Voir la notice de l'article provenant de la source Math-Net.Ru

An improved Rellich emptiness criterion is proposed for the discrete spectrum of the Dirichlet problem for the equation $\Delta v+\lambda v=0$. Examples of its application are given.

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