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Borel structure of the spectrum of a closed operator
spectrum point spectrum Hilbert space reflexive Banach space Borel set closed operator weak topology
2011/8/29
Abstract: For a linear operator $T$ in a Banach space let $\sigma_p(T)$ denote the point spectrum of $T$, $\sigma_{p[n]}(T)$ for finite $n > 0$ be the set of all $\lambda \in \sigma_p(T)$ such that $\...