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.
‘Hyperbolicity for semigroups’: Invited seminar: Centro de Álgebra da Universidade de Lisboa, 11th May 2012.
‘Automatic presentations for algebraic and combinatorial structures’: Invited seminar: Centro de Matemática da Universidade de Coimbra, 20th March 2013.
‘Plactic monoids and rewriting systems’: Invited seminar: Sultan Qaboos University, 23rd April 2013.

‘Certain properties of subsemigroups of free groups’: Seminar: University of St Andrews, 13th August 2003.
‘Automatic semigroups & Malcev presentations I’: Informal seminar: Friday Group, University of St Andrews, 26th March 2004.
‘Automatic semigroups & Malcev presentations II’: Informal seminar: Friday Group, University of St Andrews, 7th May 2004.
‘Malcev presentations’: Seminar: University of St Andrews, 17th June 2004.
‘Automaton semigroups’: Seminar: Pure Mathematics Colloquium, University of St Andrews, 29th May 2008.
‘Malcev presentations for subsemigroups of groups’: Seminar: Centro de Álgebra da Universidade de Lisboa, 31st October 2008.
‘Automatic presentations and semigroups’: Seminar: Centro de Matemática da Universidade do Porto, 25th September 2009.
‘Malcev presentations for subsemigroups of groups’: Seminar: Centro de Matemática da Universidade do Porto, 30th October 2009.
‘Unary FA-presentable algebraic and relational structures’: Seminar: Centro de Matemática da Universidade do Porto, 15th February 2012.
‘Plactic monoids, rewriting systems and biautomaticity’: Seminar: Centro de Matemática da Universidade do Porto, 26th October 2012.