On universal operators and universal pairs
We study some basic properties of the class of universal operators on Hilbert space, and provide new examples of universal operators and universal pairs.
math.FA↗
arXiv subjects
Riikka Schroderus
Publications and source records attributed to Riikka Schroderus.
Spectra of linear fractional composition operators on the Hardy and weighted Bergman spaces of the half-plane
We compute the spectra and the essential spectra of bounded linear fractional composition operators acting on the Hardy and weighted Bergman spaces of the upper half-plane. We are also able to extend the results to weighted Dirichlet spaces of the upper half-plane.
math.FA↗