Introduction to linear operator theory. (English) Zbl 0457.47001


47A05 General (adjoints, conjugates, products, inverses, domains, ranges, etc.)
47-02 Research exposition (monographs, survey articles) pertaining to operator theory
47A12 Numerical range, numerical radius
47B20 Subnormal operators, hyponormal operators, etc.
46H05 General theory of topological algebras
47B25 Linear symmetric and selfadjoint operators (unbounded)
47D03 Groups and semigroups of linear operators
47A35 Ergodic theory of linear operators