Perturbation Theory for Linear Operators

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Focusing on spectral theory, this book explores key topics such as the completeness of generalized eigenvectors, Riesz bases, and semigroup theory. It addresses recent advancements in perturbed non-self-adjoint operators, including their eigenvalue behavior and applications in physical problems like sound radiation from vibrating plates. The content is designed for students and researchers in spectral theory, pure analysts, and mathematicians, offering a blend of theoretical insights and practical implications in mathematical physics and mechanics.