N. Tosheva

collaborators

2 papers

math-ph2020

Analysis of the discrete spectrum of the family of $3 \times 3$ operator matrices

Mukhiddin I. Muminov, Tulkin H. Rasulov, Nargiza A. Tosheva

We consider the family of $3 \times 3$ operator matrices $H (K),$ $K \in T^{3} := (- π; π]^{3}$ associated with the lattice systems describing two identical bosons and one par…

math-ph2019

Analytic description of the essential spectrum of a family of $3 \times 3$ operator matrices

Tulkin H. Rasulov, Nargiza A. Tosheva

We consider the family of $3 \times 3$ operator matrices $H (K),$ $K \in T^{d} := (- π; π]^{d}$ arising in the spectral analysis of the energy operator of the spin-boson…

Analysis of the discrete spectrum of the family of 3×3 operator matrices

Analytic description of the essential spectrum of a family of 3×3 operator matrices

Analysis of the discrete spectrum of the family of $3 \times 3$ operator matrices

Analytic description of the essential spectrum of a family of $3 \times 3$ operator matrices