Arnbjörg Soffía Árnadóttir (06/10/16)

Benedikt Magnússon, October 6, 2016

Meistaraprófsfyrirlestur

Arnbjörg Soffía Árnadóttir
Title: Group actions on infinite digraphs and the suborbit function

Location: Naustið, Endurmenntun.
Time: Thursday October 6. 2016 at 16:00.

Abstract:

We study infinite directed graphs, using group actions. We start by defining a group homomorphism called the suborbit function. Then we use this homomorphism to investigate various properties of infinite digraphs, including homomorphic images, highly arc transitive digraphs, Cayley-Abels digraphs and the growth of digraphs.

Advisors: Professor Rögnvaldur G. Möller and professor Jón Ingólfur Magnússon at Science Institute, University of Iceland.
Examiner: Professor emeritus Peter M. Neumann The Queen’s College, Oxford University.