caa a22 4500 605523460 CHVBK 20210128100749.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10958-015-2620-1 doi (NATIONALLICENCE)springer-10.1007/s10958-015-2620-1 To the spectral theory of the Bessel operator on finite interval and half-line [Elektronische Daten] [Aleksandra Ananieva, Viktoriya Budyika] The minimal and maximal operators generated by the Bessel differential expression on a finite interval and a half-line are studied. All nonnegative self-adjoint extensions of the minimal operator are described. We obtain a description of the domain of the Friedrichs extension of the minimal operator in the framework of extension theory of symmetric operators by applying the technique of boundary triplets and the corresponding Weyl functions, and by using the quadratic form method. Springer Science+Business Media New York, 2015 Bessel operator nationallicence boundary triplet nationallicence Weyl function nationallicence spectral function nationallicence quadratic form nationallicence Friedrichs and Krein extensions nationallicence Ananieva Aleksandra Institute of Applied Mathematics and Mechanics of the NAS of Ukraine, Slavyansk, Ukraine aut Budyika Viktoriya Institute of Applied Mathematics and Mechanics of the NAS of Ukraine, Slavyansk, Ukraine aut Journal of Mathematical Sciences Springer US; http://www.springer-ny.com 211/5(2015-12-01), 624-645 1072-3374 211:5<624 2015 211 10958 https://doi.org/10.1007/s10958-015-2620-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10958-015-2620-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ananieva Aleksandra Institute of Applied Mathematics and Mechanics of the NAS of Ukraine, Slavyansk, Ukraine aut NATIONALLICENCE 700 1- Budyika Viktoriya Institute of Applied Mathematics and Mechanics of the NAS of Ukraine, Slavyansk, Ukraine aut NATIONALLICENCE 773 0- Journal of Mathematical Sciences Springer US; http://www.springer-ny.com 211/5(2015-12-01), 624-645 1072-3374 211:5<624 2015 211 10958