Point interactions for the n-th derivative operator in one dimension are investigated. Every such perturbed operator coincides with a selfadjoint extension of the n-th derivative operator restricted ...

This is a preview. Log in through your library . Abstract Let $D: C^n\lbrack 0, 1 \rbrack \rightarrow \mathscr{M}$ be a derivation from the Banach algebra of $n ...