Geodesic
Solvability of multipoint differential operators of first order
Electronic journal of differential equations, Tome 2015 (2015)
Based on methods of operator theory, we describe all boundedly solvable extensions of the minimal operator generated by a linear multipoint functional differential-operator expression of first order, in a direct sum of Hilbert space of vector-functions. We also study the structure of spectrum of these extensions.
Classification : 47A10
Keywords: differential operators, solvable extension, spectrum 
@article{EJDE_2015__2015__a23,
     author = {Ismailov,  Zameddin I. and Ipek,  Pembe},
     title = {Solvability of multipoint differential operators of first order},
     journal = {Electronic journal of differential equations},
     year = {2015},
     volume = {2015},
     zbl = {1310.47061},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a23/}
}
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%A Ipek,  Pembe
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%J Electronic journal of differential equations
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Ismailov,  Zameddin I.; Ipek,  Pembe. Solvability of multipoint differential operators of first order. Electronic journal of differential equations, Tome 2015 (2015). http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a23/