Tumanov Sergey Nickolaevich

Publications in Math-Net.Ru

1. Sectoriality and Compactness of the Resolvent of a Nonself-Adjoint Sturm–Liouville Operator with a Singular Distribution Potential
   
   Mat. Zametki, 118:2 (2025),  330–335
2. Molchanov's criterion for compactness of the resolvent for a nonselfadjoint Sturm–Liouville operator
   
   Mat. Sb., 215:9 (2024),  125–146
3. On one condition for the discreteness of the spectrum and the compactness of the resolvent of a nonsectorial Sturm–Liouville operator on the semiaxis
   
   Dokl. RAN. Math. Inf. Proc. Upr., 510 (2023),  39–42
4. A Completeness Theorem for the System of Eigenfunctions of the Complex Schrödinger Operator with Potential $q(x)=cx^\alpha$
   
   Mat. Zametki, 109:5 (2021),  797–800
5. On the limit behaviour of the spectrum of a model problem for the Orr–Sommerfeld equation with Poiseuille profile
   
   Izv. RAN. Ser. Mat., 66:4 (2002),  177–204
6. On the Spectrum Localization of the Orr–Sommerfeld Problem for Large Reynolds Numbers
   
   Mat. Zametki, 72:4 (2002),  561–569
7. Asymptotic formulae for the real eigenvalues of the Sturm–Liouville problem with two turning points
   
   Izv. RAN. Ser. Mat., 65:5 (2001),  153–166
8. Asymptotics of the eigenvalues of the indefinite Sturm–Liouville problem with two turning points
   
   Uspekhi Mat. Nauk, 55:5(335) (2000),  179–180