A. Posilicano

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Articles: 2

On the common point spectrum of pairs of self-adjoint extensions

Andrea Posilicano

↓ Abstract   |   Article (.pdf)

Methods Funct. Anal. Topology 20 (2014), no. 1, 59-67

Given two different self-adjoint extensions of the same symmetric operator, we analyse the intersection of their point spectra. Some simple examples are provided.

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

Andrea Posilicano

Methods Funct. Anal. Topology 10 (2004), no. 2, 57-63


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