Invited seminars

‘Malcev presentations for subsemigroups of groups’

Invited seminar: University of Glasgow, 13th October 2004.

‘Decidability and undecidability for automatic semigroups’

Invited seminar: University of Edinburgh & Heriot–Watt University (Joint), 15th November 2005.

‘Automatic presentations and semigroups’

Invited seminar: Centro de Álgebra da Universidade de Lisboa, 10th September 2010.
[ Slides (Gzipped PDF) ]