${\sL}$-resolvents and pseudo-spectral functions of symmetric linear relations in Hilbert spaces

Volodymyr Derkach

Let $A$ be a closed symmetric operator with the deficiency index $(p,p)$, $p<\infty$, acting in a Hilbert space $\sH$ and let $\sL$ be a subspace of $\sH$. The set of $\sL$-resolve…