Singular degenerate normal operators for first-orderFatih Yilmaz; Meltem Sertbas;
In this paper, all normal extensions of the minimal operator associated with the singular degenerate linear differential expressions for first order in the Hilbert space of vector-functions are investigated in terms of boundary values. As well, it analyzes the spectrum parts of any normal extension.
Vol. 23 (2022), No. 1, pp. 521-528