Staff Lead researchers Emeritus Professor Peter Kropholler Research interests Splittings of groups and group actions on trees. Ends of groups. Groups with Eilenberg–Mac Lane spaces of finite type, their structure and their classifying s… Modular Invariant Theory. Connect with Peter Email: P.H.Kropholler@southampton.ac.uk Collaborating research institutes, centres and groups Pure Mathematics Collaborating around the world to contribute to research in algebra, analysis, geometry and topology. Research outputs