Spectra of linear fractional composition operators and properties of universal operators

• Main Author: Schroderus, Riikka
• Other Authors: Lindström, Mikael, University of Helsinki, Faculty of Science, Department of Mathematics and Statistics, Helsingin yliopisto, matemaattis-luonnontieteellinen tiedekunta, matematiikan ja tilastotieteen laitos, Helsingfors universitet, matematisk-naturvetenskapliga fakulteten, institutionen för matematik och statistik, Tylli, Hans-Olav, Nieminen, Pekka
• Format: Doctoral or Postdoctoral Thesis
• Language: English
• Published: Helsingin yliopisto 2017
• Subjects: matematiikka; Gutiérrez; Möbius; tylli
• Online Access: http://hdl.handle.net/10138/180931

The topics of this thesis in mathematics belong to the area of operator theory which, in general, studies linear transformations between complete normed vector spaces. Here, all operators considered are bounded and act on complex separable infinite-dimensional Hilbert space. A prototypical example o...