Eigenvalue asymptotics for the Sturm-Liouville operator with potential having a strong local negative singularity | Zendy

Medet Nursultanov | Zendy; Grigori Rozenblum | Zendy

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Eigenvalue asymptotics for the Sturm-Liouville operator with potential having a strong local negative singularity

Author(s) -

Medet Nursultanov,

Grigori Rozenblum

Publication year - 2016

Publication title -

opuscula mathematica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.481

H-Index - 16

eISSN - 2300-6919

pISSN - 1232-9274

DOI - 10.7494/opmath.2017.37.1.109

Subject(s) - mathematics , singularity , eigenvalues and eigenvectors , operator (biology) , mathematical analysis , mathematical physics , pure mathematics , quantum mechanics , physics , biochemistry , chemistry , repressor , transcription factor , gene

We find asymptotic formulas for the eigenvalues of the Sturm-Liouville operator on the finite interval, with potential having a strong negative singularity at one endpoint. This is the case of limit circle in H. Weyl sense. We establish that, unlike the case of an infinite interval, the asymptotics for positive eigenvalues does not depend on the potential and it is the same as in the regular case. The asymptotics of the negative eigenvalues may depend on the potential quite strongly, however there are always asymptotically fewer negative eigenvalues than positive ones. By unknown reasons this type of problems had not been studied previously

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