Geodesic
Isometric embeddings of coinvariant subspaces of the shift operator
Zapiski Nauchnykh Seminarov POMI, Investigations on linear operators and function theory. Part 24, Tome 232 (1996), pp. 5-15

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Let $\theta$ be an inner function. The main aim of the paper is to describe all positive measures on the unit circle $\mathbb T$ such that $\int_\mathbb T|f|^2\,d\mu=\|f\|^2_{H^2}$ for all continuous functions $f\in H^2\ominus\theta H^2$. Bibl. 8 titles. 
@article{ZNSL_1996_232_a0,
     author = {A. B. Aleksandrov},
     title = {Isometric embeddings of coinvariant subspaces of the shift operator},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {5--15},
     publisher = {mathdoc},
     volume = {232},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1996_232_a0/}
}
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JO  - Zapiski Nauchnykh Seminarov POMI
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EP  - 15
VL  - 232
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1996_232_a0/
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ID  - ZNSL_1996_232_a0
ER  - 
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%A A. B. Aleksandrov
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%J Zapiski Nauchnykh Seminarov POMI
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%I mathdoc
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%G ru
%F ZNSL_1996_232_a0
A. B. Aleksandrov. Isometric embeddings of coinvariant subspaces of the shift operator. Zapiski Nauchnykh Seminarov POMI, Investigations on linear operators and function theory. Part 24, Tome 232 (1996), pp. 5-15. http://geodesic.mathdoc.fr/item/ZNSL_1996_232_a0/