Geodesic
Nonautonomous Livšic colligations and hyponormal operators
Acta mathematica Universitatis Comenianae, Tome 78 (2009) no. 1 
I. V. Vorobyov. Nonautonomous Livšic colligations and hyponormal operators. Acta mathematica Universitatis Comenianae, Tome 78 (2009) no. 1. http://geodesic.mathdoc.fr/item/AMUC_2009_78_1_a1/
@article{AMUC_2009_78_1_a1,
     author = {I. V. Vorobyov},
     title = {Nonautonomous {Liv\v{s}ic} colligations and hyponormal operators},
     journal = {Acta mathematica Universitatis Comenianae},
     year = {2009},
     volume = {78},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/AMUC_2009_78_1_a1/}
}
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%J Acta mathematica Universitatis Comenianae
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Voir la notice de l'article provenant de la source Comenius University

In this work, the model of a nonautonomous Livšic colligation for operators that are close to the normal is studied. The connection between the determining function for operator and the characteristic function for colligation is obtained.