2025-02-23T04:05:26-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: Query fl=%2A&wt=json&json.nl=arrarr&q=id%3A%22irk-123456789-154929%22&qt=morelikethis&rows=5
2025-02-23T04:05:26-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: => GET http://localhost:8983/solr/biblio/select?fl=%2A&wt=json&json.nl=arrarr&q=id%3A%22irk-123456789-154929%22&qt=morelikethis&rows=5
2025-02-23T04:05:26-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: <= 200 OK
2025-02-23T04:05:26-05:00 DEBUG: Deserialized SOLR response
Towards the rank-one singular perturbations theory of self-adjoint operators

Towards the rank-one singular perturbations theory of self-adjoint operators

The perturbation theory is developed in the case when an arbitrary positive self-adjoint operator is perturbed by the projector on a generalized vector. Similar to the well-known problem −Δ+λδ MS we obtain in general situation explicit representations for singularly perturbed operators their resolve...

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Bibliographic Details
Main Author: Koshmanenko, Y.D.
Format: Article
Language:English
Published: Інститут математики НАН України 1991
Series:Український математичний журнал
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Online Access:http://dspace.nbuv.gov.ua/handle/123456789/154929
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2025-02-23T04:05:26-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: Query fl=%2A&rows=40&rows=5&wt=json&json.nl=arrarr&q=id%3A%22irk-123456789-154929%22&qt=morelikethis
2025-02-23T04:05:26-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: => GET http://localhost:8983/solr/biblio/select?fl=%2A&rows=40&rows=5&wt=json&json.nl=arrarr&q=id%3A%22irk-123456789-154929%22&qt=morelikethis
2025-02-23T04:05:26-05:00 DEBUG: VuFindSearch\Backend\Solr\Connector: <= 200 OK
2025-02-23T04:05:26-05:00 DEBUG: Deserialized SOLR response

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