Research output: Contribution to journal › Article › peer-review
Krein-type theorems and ordered structure for Cauchy–de Branges spaces. / Abakumov, Evgeny; Baranov, Anton; Belov, Yurii.
In: Journal of Functional Analysis, Vol. 277, No. 1, 01.07.2019, p. 200-226.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Krein-type theorems and ordered structure for Cauchy–de Branges spaces
AU - Abakumov, Evgeny
AU - Baranov, Anton
AU - Belov, Yurii
PY - 2019/7/1
Y1 - 2019/7/1
N2 - We extend some results of M. G. Krein to the class of entire functions which can be represented as ratios of discrete Cauchy transforms in the plane. As an application we obtain new versions of de Branges' Ordering Theorem for nearly invariant subspaces in a class of Hilbert spaces of entire functions. Examples illustrating sharpness of the obtained results are given. We also discuss applications to spectral theory of rank one perturbations of normal operators.
AB - We extend some results of M. G. Krein to the class of entire functions which can be represented as ratios of discrete Cauchy transforms in the plane. As an application we obtain new versions of de Branges' Ordering Theorem for nearly invariant subspaces in a class of Hilbert spaces of entire functions. Examples illustrating sharpness of the obtained results are given. We also discuss applications to spectral theory of rank one perturbations of normal operators.
KW - Cartwright class
KW - Cauchy transform
KW - Entire function
KW - Nearly invariant subspaces
UR - http://www.scopus.com/inward/record.url?scp=85056240864&partnerID=8YFLogxK
U2 - 10.1016/j.jfa.2018.10.010
DO - 10.1016/j.jfa.2018.10.010
M3 - Article
AN - SCOPUS:85056240864
VL - 277
SP - 200
EP - 226
JO - Journal of Functional Analysis
JF - Journal of Functional Analysis
SN - 0022-1236
IS - 1
ER -
ID: 39817285