CARMA Colloquium, University of Newcastle, Jun 14 2011 What is a self-similar group? What is a self-similar group? Differential Geometry Seminar, University of Adelaide, Apr 20 2012 New examples of totally disconnected, locally compact groups IMIA seminar, University of Wollongong, Mar 21 2012 Finding short words in the first Grigorchuk group AMSI workshop on 'Connecting finite and infinite mathematics through symmetry', University of Wollongong, Feb 1-3 2012 New examples of totally disconnected groups SAMS-AMS Joint meeting, Special session on combinatorial and computational group theory, Nelson Mandela University, Port Elizabeth, South Africa, Dec 1 2011 New examples of totally disconnected groups Algebra-Geometry-Topology seminar, The University of Melbourne, Nov 22 2011 New examples of totally disconnected, locally compact groups coming from geometric group theory AustMS annual meeting, Special session on algebra and number theory, University of Wollongong, September 28 2011 New results about Baumslag-Solitar groups CARMA Colloquium, University of Newcastle, Aug 18 2011 Stack sorting and pattern-avoiding permutations GTA Seminar, University of Newcastle, May 31 2011 Computing in infinite groups in logspace CARMA Seminar, University of Newcastle, Mar 24 2011 Finding short words in the Grigorchuk group Infinite groups seminar, University of Sydney, Nov 22 2010 What is ... a sofic group? CARMA Colloquium, University of Newcastle, Nov 18 2010 Random subgroups of Thompson's group F Victorian algebra conference, Monash, Nov 4-5 2010 Closure properties of logspace computable groups AustMS annual meeting, Special session on algebra and number theory, UQ, September 2010 Logspace computable groups Algebra, Combinatorics and Topology Seminar, UQ, March 23, 2010 Generating functions and context-free grammars Algebra, Combinatorics and Topology Seminar, UQ, January 19, 2010 Computing geodesics in BS(1,p) in linear time Victorian Algebra Conference, University of Melbourne, November 5-6, 2009 What is ... a sofic group? Mathematics Colloquia Series, LaTrobe University, Nov 3, 2009 Computing in infinite groups PhD Journal Club, UQ, Oct-Nov, 2009 Introductory lectures on geometric group theory Series of talks given together with Stephan Tillmann AustMS Conference, Special Session on Geometry and Topology, University of South Australia, Sept 29, 2009 Geodesic growth and cogrowth for groups Maths Teaching Seminar, UQ, May 13, 2009 Matlab in 1051 - making it real, integrated, relevant Stevens/ACC Webinar, Online, April 6, 2009 (3pm NJ time) Some geodesic problems Algebra and Combinatorics Seminar, UQ, March 31, 2009. Geodesics in the first Grigorchuk group Computer Science Colloquium, Hofstra University, March 18, 2009. Pattern avoiding permutations and sorting with stacks Geometric and asymptotic group theory with applications, Stevens Inst of Tech, March 9, 2009. Counting elements and geodesics in groups Algebra and Combinatorics Seminar, UQ, October 7, 2008. Stallings' group has a quadratic Dehn function Victorian Algebra Conference, RMIT, October 3, 2008. Stallings' group has a quadratic Dehn function Algebra-Geometry-Topology Seminar, University of Melbourne, August 26, 2008. Amenability and percolation for infinite graphs Algebra and Combinatorics Seminar, UQ, July 29, 2008. Amenability and percolation School of Physical Sciences Colloquium, UQ, May 16, 2008. Rapid transit in groups - finding your way around BS(1,p) Geometry/Topology Seminar, University of Melbourne, March 20, 2008. Geodesic growth Algebra and Combinatorics Seminar, UQ, March 11, 2008. Geodesics in groups - describing, counting and computing them Algebra and Combinatorics Seminar, UQ, March 4, 2008. Pattern avoiding permutations and sorting with stacks Fields Workshop in Asymptotic Group Theory and Cryptography, Carleton University, Ottawa, December 15, 2007. Stallings' group has a quadratic Dehn function New York Group Theory Seminar, CUNY Graduate Center, New York, November 16, 2007. Stallings' group has a quadratic Dehn function Universidad de los Andes, Bogota, Colombia, October 4, 2007. ¿Cuales un grupo automatico? University of Queensland, Brisbane, September 3, 2007. Counting tree pairs and random subgroups The University of Melbourne, Geometry and Topology Seminar, July 23, 2007. Thompson's group F Stevens Inst Tech, ACC Seminar, May 3, 2007. Generating functions and asymptotic subgroups of Thomspon's group Rutgers University, Colloquium, March 28, 2007. Asymptotic subgroups of groups Groups 007, CIRM, Marseille, France. Asymptotic properties of subgroups of Thompson's group F Cornell University, Topology and Geometric Group Theory Seminar, February 6, 2007. Asymptotic properties of subgroups of Thompson's group F University of British Columbia, Vancouver, Canada, Discrete Math Seminar, November 21, 2006. Asymptotic density and Thompson's group F Bowdoin College, Maine, November 8, 2006. G-automata and word problems for groups (Dept seminar) Stack sorting (Student seminar) New York Group Theory Seminar, CUNY Graduate Center, October 20, 2006. Automata you can count on Stevens Inst of Tech, Computer Science Seminar, October 10, 2006. Stack sorting and permutation patterns Ohio State University, Geometric Group Theory Seminar, October 4, 2006. D-finiteness and group growth Tufts University, GGT@Tufts Seminar, September 26, 2006. D-finiteness and group growth University of Wollongong, HSC Maths Day, July 3, 2006. The binomial theorem, permutations and combinations Stat-Mech Seminar, University of Melbourne, May 18, 2006. Permutations generated by stack in series Stevens Institute of Technology, Hoboken, New Jersey, March 6, 2006. Pattern-avoiding permutations University of Wollongong, Colloquium, March 2, 2006. An introduction to pattern-avoiding permuations Manifolds in Melbourne, January 2006. Zimin words, Schreier graphs, dead ends, and Grigorchuk's group University of Sydney, Algebra seminar, Sept 2, 2005. Looking for short words in the first Grigorchuk group Groups St Andrews, Scotland, August 4 2005. Limit groups and games you can play with Cayley graphs Barcelona Conference on Geometric Group Theory, CRM, Spain, July 1 2005. Zimin words, Schreier graphs, and Grigorchuk's group Asymptotic and Probabilistic Methods in Geometric Group Theory, Geneva, June 23 2005. Languages of geodesics in groups CRM, Barcelona, Seminari de Geometria del Problema de la Paraula, June 17, 2005. Geodesics in the first Grigorchuk group University of St Andrews, CIRCA Seminar, May 18, 2005. Words in the Grigorchuk group University of Washington, Combinatorics Seminar, Apr 20, 2005. Formal languages and patttern avoiding permutations New York Group Theory Seminar, CUNY Graduate Center, April 1, 2005. Formal languages and some problems in combinatorics Pattern Avoiding Permutations 05, Gainsville, Florida, March 2005. Pattern avoiding permutations are context-sensitive Combinatorics Seminar, University of Melbourne, February 10, 2005. New ideas for restricted permutations Fields Institute Algebraic Combinatorics Seminar, Toronto, Canada, December 15, 2004. Pattern avoiding permutations are context-sensitive Canadian Mathematical Society Winter Meeting, Montreal, Canada, December 12, 2004. Geodesic languages for the lamplighter groups and other wreath products University of Washington, Algebra Seminar, Oct 19, 2004. A context-free and a counter geodesic language for Baumslag-Solitar groups Albany Group Theory Conference, Rensselaerville, New York, October 9, 2004. Having a counter full language of geodesics is not invariant under change of generating set University of Newcastle Upon Tyne, Algebra Seminar, May 20, 2004. Regular, context-free and counter geodesic languages for groups University of Glasgow Algebra Seminar, May 5, 2004. Formal languages of geodesics in groups Edinburgh & Heriot-Watt Algebra Seminar, May 4, 2004. Regular, context-free and counter languages of geodesics in groups Conference on Geometric Group Theory, Bedlewo, Poland, April 18-24, 2004. Geodesic languages for the lamplighter groups Binghamton University, Geometry/Topology Seminar, Binghamton, New York, April 1, 2004. Regular, context-free and counter languages of geodesics Cornell University, Topology & Geometric Group Theory Seminar, Ithaca, New York, March 30, 2004. Regular, context-free and counter languages of geodesics AMS Sectional Meeting, Special session on probabilistic and asymptotic aspects of group theory, Athens, Ohio, March 26, 2004. A context-free language of geodesic normal forms for Baumslag-Solitar groups University of St Andrews, CIRCA seminar, March 10 and 24, 2004. Formal language classes; Regular, context-free and counter languages of geodesics for the Lamplighter groups Albany Group Theory Conference, Rensselaerville, New York, October 19, 2003. A context-free language of geodesics for Baumslag-Solitar groups Brandeis University, Topology Seminar, Waltham, Massachusetts, September 24, 2003. Patterns theory for some Cayley graphs of groups Spring Topology and Dynamics Conference, Lubbock, Texas, March 20, 2003. Regular geodesic languages in CAT(0) groups New York Group Theory Seminar, CUNY Graduate Center, February 2003. Combinatorial conditions that imply word-hyperbolicity for 3-manifolds Columbia University Geometric Topology Seminar, New York, February 14, 2003. (current page) Minimal almost convexity and Baumslag-Solitar groups Wasatch Topology Conference, Salt Lake City, Utah, October 26, 2002. The loop shortening property and almost convexity University of Melbourne, Geometry/Topology seminar, Melbourne, Australia, May 20, 2002. A new class of word-hyperbolic 3-manifolds AMS National Meeting, Special Session on Computational Topology, San Diego, California, January 8, 2002. A special case of the weak hyperbolization conjecture Albany Group Theory Conference, Rensselaerville, New York, October 13, 2001. The loop shortening property for groups Finitely Presented Groups: Questions and Algorithms, Trento, Italy, July 24, 2001. Patterns theory and geodesic automatic structure Workshop on Geometric Group Theory, Montreal, Canada, July 2001. Finiteness and the falsification by fellow traveler property York University Algebra Seminar, Toronto, Canada, April 16, 2001. Curvature testing in metric polyhedral complexes and lunar exploration Groups-semigroups-topology seminar, University of Nebrska Lincoln, March 2001. Patterns theory and automatic groups Rice University, Houston, Texas, January 29, 2001. Curvature testing in metric polyhedral complexes and lunar exploration Albany Group Theory Conference, Rensselaerville, New York, October 14, 2000. Finiteness properties and almost convexity Texas A&M University, Algebra and Combinatorics Seminar, College Station, Texas, October 2, 2000. Geodesics and patterns in groups Computational and Geometric Aspects of Groups and Semigroups Conference, Lincoln, Nebraska, May 19, 2000. Finiteness properties for almost convex groups Conference on Computational and Geometric Group Theory, Sydney, Australia, November 1999. Patterns theory and automatic groups AustMS/AMS Joint meeting, Melbourne July 12-16 1999 A non-Hopfian almost convex group |