A. Posilicano

activity

19992005

most citedBoundary triples and Weyl functions for singular perturbations of self-adjoint operators

48 citations · 55 across the 5 of their papers we have counts for

collaborators

Showing 2001Show all

2 papers · 1 filter

math.FA2001

Self-Adjoint Extensions by Additive Perturbations

Andrea Posilicano

Let $A_{N}$ be the symmetric operator given by the restriction of $A$ to $N$ , where $A$ is a self-adjoint operator on the Hilbert space $\H$ and $N$ is a linear dense set which is…

math.FA2001

Boundary Conditions for Singular Perturbations of Self-Adjoint Operators

Andrea Posilicano

Let $A:D(A)\subseteq\H\to\H$ be an injective self-adjoint operator and let $τ:D(A)\to\X$, X a Banach space, be a surjective linear map such that $\|τϕ\|_\X\le c \|Aϕ\|_\H$. Supposi…