Essential spectrum of non-self-adjoint singular matrix differential operators

Ibrogimov, OrifOrifIbrogimov2024-10-252024-10-252017https://boris-portal.unibe.ch/handle/20.500.12422/160074en500 - Science::510 - MathematicsEssential spectrum of non-self-adjoint singular matrix differential operatorsarticle10.7892/boris.11396310.1016/j.jmaa.2017.02.017