Research output: Chapter in Book/Report/Conference proceeding › Chapter › Research › peer-review
Canonical Systems in Classes of Compact Operators. / Romanov, Roman; Woracek, Harald.
Extended Abstracts Fall 2019: Spaces of Analytic Functions: Approximation, Interpolation, Sampling. Birkhäuser Verlag AG, 2021. p. 207-209 (Trends in Mathematics; Vol. 12).Research output: Chapter in Book/Report/Conference proceeding › Chapter › Research › peer-review
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TY - CHAP
T1 - Canonical Systems in Classes of Compact Operators
AU - Romanov, Roman
AU - Woracek, Harald
N1 - Publisher Copyright: © 2021, The Author(s), under exclusive license to Springer Nature Switzerland AG.
PY - 2021
Y1 - 2021
N2 - Spectral properties of two-dimensional canonical systems with locally integrable Hamiltonian are studied. We give a criterion of discreteness of the spectrum of the associated selfadjoint operator, and study asymptotic distribution of this spectrum in terms of symmetrically normed ideals of compact operators. Simultaneously, we answer a 1968 question of Louis de Branges on description of the Hamiltonians which are structure functions of some de Branges spaces.
AB - Spectral properties of two-dimensional canonical systems with locally integrable Hamiltonian are studied. We give a criterion of discreteness of the spectrum of the associated selfadjoint operator, and study asymptotic distribution of this spectrum in terms of symmetrically normed ideals of compact operators. Simultaneously, we answer a 1968 question of Louis de Branges on description of the Hamiltonians which are structure functions of some de Branges spaces.
UR - http://www.scopus.com/inward/record.url?scp=85119684029&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/974fa047-491c-3fd3-8584-91e9187ca820/
U2 - 10.1007/978-3-030-74417-5_26
DO - 10.1007/978-3-030-74417-5_26
M3 - Chapter
AN - SCOPUS:85119684029
SN - 978-3-030-74416-8
T3 - Trends in Mathematics
SP - 207
EP - 209
BT - Extended Abstracts Fall 2019
PB - Birkhäuser Verlag AG
ER -
ID: 89303841