A simple proof of a theorem of Volberg and Treil' concerning imbeddings for coinvariant subspaces of the shift operator
Zapiski Nauchnykh Seminarov POMI, Investigations on linear operators and function theory. Part 22, Tome 217 (1994), pp. 26-35
A. B. Aleksandrov. A simple proof of a theorem of Volberg and Treil' concerning imbeddings for coinvariant subspaces of the shift operator. Zapiski Nauchnykh Seminarov POMI, Investigations on linear operators and function theory. Part 22, Tome 217 (1994), pp. 26-35. http://geodesic.mathdoc.fr/item/ZNSL_1994_217_a2/
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     author = {A. B. Aleksandrov},
     title = {A~simple proof of a~theorem of {Volberg} and {Treil'} concerning imbeddings for coinvariant subspaces of the shift operator},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {26--35},
     year = {1994},
     volume = {217},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1994_217_a2/}
}
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The main aim of the paper is stated in the title. Moreover, a characterization of,one-component inner functions is presented. Bibliography: 7 titles.