A. Posilicano

activity

19992026

most citedKrein's Resolvent Formula for Self-Adjoint Extensions of Symmetric Second Order Elliptic Differential Operators

66 citations · 458 across the 52 of their papers we have counts for

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Showing 2001 · math.FAShow all

2 papers · 2 filters

math.FA2001★ 25 cited

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…