A generalization of Banach’s lemma and its applications to perturbations of bounded linear operators - Wang, Zi; Ding, Jiu; Wang, Yu-wen (Applied Mathematics-A Journal of Chinese Universities, 2024)
Keywords: Applications of Mathematics; Banach spaces; Linear operators; Mathematics; Mathematics and Statistics; Operators (mathematics); Perturbation methods; Banach lemma; perturbation analysis; 65F20; 47A55; generalized inverse; spectral radius; 15A09