PATHY
发表于 2025-3-30 09:26:15
Closed and Adjoint Operatorsrs that cover almost all interesting unbounded operators occurring in applications. The Hilbert space scalar product allows one to define the adjoint of a densely defined linear operator. Various characterizations of closed and closable operators and basic results on adjoint operators are derived. T
法律的瑕疵
发表于 2025-3-30 16:07:00
The Spectrum of a Closed Operatorperator theory. In the first section, regular points and defect numbers of linear operators are defined and studied, and the Krasnoselskii–Krein theorem about the constancy of defect numbers on connected components of the regularity domain is proved. These results are used to derive basic properties