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Talks given at conferences and seminars

(A * before the number means invited/plenary talk)

91. Introduction to incidence geometry with an emphasis on polytopes, hypertopes, maps and maniplexes.
Symmetries of Surfaces, Maps and Dessins, BIRS Workshop (Canada), September 24-29, 2017.
90. Almost simple groups and polytopes.
Symmetries of Surfaces, Maps and Dessins, BIRS Workshop (Canada), September 24-29, 2017.
*89. An algorithm to classify chiral polytopes of a given group.
PRIMA Congress 2017, Special session on Discrete Mathematics, Oaxaca, August 14-18, 2017.
*88. Alternating groups and polytopes.
All kinds of mathematics remind me of you, a conference in honour of Peter Cameron's 70th birthday, Lisbon (Portugal), July 24-29, 2017.
87. Finite simple groups and highly symmetric hypertopes.
Department of Mathematics Seminar, Beijing Jiaotong University, China. April 7, 2017.
*86. Finite simple groups and highly symmetric hypertopes.
International Workshop on Combinatorial and Computational Aspects of Optimization, Topology and Algebra Los Cabos, Baja California Sur, Mexico. November 27 - December 3, 2016.
85. Highly symmetric polyhedra and finite simple groups.
Seminar UG-ULB on Finite Geometries. October 13, 2016.
*84. Highly symmetric polytopes and finite simple groups.
Brussels Summer School in Mathematics, Brussels, August 1 - 5, 2016.
*83. Regular polytopes and almost simple groups.
10 hours mini-course, 2016 PhD Summer School in Discrete Mathematics, Rogla (Slovenia), June 26 - July 2, 2016.
*82. Hypertopes with diagrams of assigned shape.
AMS Fall Eastern Sectional Meeting, Special Session on Geometry and Combinatorics of Polytopes, Rutgers University (USA), November 14-15, 2015.
81. Polytopes and symmetric groups.
University of KwaZulu-Natal, South Africa, October 21, 2015.
80. Hexagonal extensions of toroidal hypermaps.
Algebra seminar, University of Aveiro, October 7, 2015.
*79. Hexagonal extensions of toroidal hypermaps.
Geometry and Symmetry, University of Pannonia in Veszprem, Hungary. June 29 - July 3, 2015.
*78. Hypertopes arising from Suzuki groups.
8th Slovenian International Conference on Graph Theory, Minisymposium on Polytopes and Graphs, Kranjska Gora, June 22-26, 2015.
77. Abstract regular polytopes and projective lines.
Discrete Geometry and Symmetry, BIRS Workshop (Canada), February 9-13, 2015.
76. Abstract polytopes and projective lines.
Algebraic Combinatorics Seminar, Fields Institute (Canada), February 6, 2015.
75. On primitive geometries of rank two.
Mathematics of Communications, BIRS Workshop (Canada), January 26-30, 2015.
74. String C-groups as transitive subgroups of Sym(n).
Geometry Seminar, Université Libre de Bruxelles (Belgium), December 19, 2014.
*73. Fracture graphs and string C-groups.
International Conference on Combinatorics and Graphs (ICM 2014 Satellite Conference), Beijing Jiaotong University (China), August 8-12, 2014.
72. Symmetric groups and abstract regular polytopes.
Oberseminar Geometrie, Université de Fribourg (Switzerland), July 14, 2014.
71. Groups of Ree type in characteristic 3 acting on polytopes.
SIGMAP 2014, Great Malvern (UK), July 7-11, 2014
70. Symmetric groups and abstract regular polytopes.
Algebra Seminar, Université libre de Bruxelles (Belgium), July 4, 2014.
*69. C-groups and almost simple groups.
Retrospective Workshop on Discrete Geometry, Optimisation and Symmetry, Fields Institute, Toronto (Canada), November 24-29, 2013.
68. Enumeration of regular maps associated to a given group and an application to the O'Nan sporadic simple group.
Algebra Seminar, University of Auckland, August 27, 2013.
*67. Enumeration of regular maps associated to a given group and an application to the O'Nan sporadic simple group.
Graph Embeddings and Maps on Surfaces (GEMS) 2013, Smolenice (Slovakia), July 15-19, 2013.
*66. Abstract polytopes with O'Nan as automorphism group.
Discrete Geometry of Polytopes, Special Session of the AMS Spring Easter Sectional Meeting, Boston (USA), April 6-7, 2013.
65. Highly symmetric polytopes.
MIT Combinatorics Seminar, Boston (USA), April 5, 2013.
64. Suzuki groups are more chiral than regular.
36th Australasian Conference on Combinatorial Mathematics and Combinatorial Computing, Sydney (Australia), December 10-14, 2012.
*63. Highly symmetric polytopes.
New Zealand Mathematics and Statistics Postgraduate Conference, Auckland (New Zealand), November 12-16, 2012.
*62. Geometries constructed from the Suzuki simple groups.
Buekenhout Geometry, Ghent (Belgium), September 20-21, 2012.
*61. Magma Minicourse on Permutation Groups, 2 lectures.
Symmetries of Discrete Objects 2012, Queenstown (New Zealand), February 13-17, 2012.
60. Polytopes of high rank for the symmetric groups.
New Zealand Mathematical Society Colloquium, Auckland (New Zealand), December 6-8, 2011.
*59. Polytopes of high rank for almost simple groups.
Workshop on Symmetry, Graphs and Polytopes, Fields Institute, Toronto (Canada), October 24-27, 2011.
58. Some constructions in incidence geometry.
Algebra Seminar, University of Auckland, October 7, 2011.
57. Chirally regular polytopes.
Seventh Slovenian International Conference on Graph Theory, Bled (Slovenia), June 20-25, 2011.
*56. Searching for Geometries with Magma.
5th De Brun Workshop on Groups, Combinatorics and Computing, NUI Galway (Ireland), April 11-16, 2011.
55. Regular and chirally regular polytopes.
London Algebra Colloquium, Imperial College, March 24, 2011.
54. Polytopes arising from almost simple groups
Universiteit Gent, Belgium, Seminar UG-ULB on finite geometries, October 29, 2010.
*53. Polytopes arising from almost simple groups
Workshop on Discrete Mathematics and Algorithms, Brussels (Belgium), October 5, 2010.
52. A journey through polytopes.
University of Auckland, Department of Mathematics Seminar, September 29, 2010.
51. Suzuki groups and polytopes
SIGMAP 2010, Oaxaca (Mexico), June 20-25, 2010.
50. On the number of abstract regular polytopes whose automorphism group is a Suzuki simple group Sz(q).
Galois Geometries and Applications, Ghent (Belgium), May 25-29, 2009.
49. Groups and Polytopes.
Colloquium, University of Ljubljana, Slovenia, April 9, 2009.
48. Locally s-arc-transitive graphs related to sporadic simple groups.
Group Theory, Combinatorics and Computation, Perth (Australia), January 5-16, 2009
47. Atlases of geometric structures.
4th International Conference on Combinatorial Mathematics and Combinatorial Computing, Auckland (New Zealand), 15-19 December 2008.
46. On computing subgroup lattices of sporadic groups with Magma.
Seminar UG-ULB-VUB on Finite Geometries, April 11, 2008.
*45. Apartments in incidence geometry.
Coloquio Victor Neumann-Lara de Teoria de las Graficas, Combinatoria y sus Aplicaciones, Zacatecas (Mexique), 3-7 March 2008.
44. On computing subgroup lattices of sporadic groups with Magma.
Pure Mathematics Seminar. November 30, 2007. University of Western Australia.
43. On computing subgroup lattices of sporadic groups with Magma.
Computational Algebra Seminar, November 22, 2007. University of Sydney.
42. On computing subgroup lattices of sporadic groups with Magma.
October 19, 2007. Deakin University, Melbourne.
41. On computing subgroup lattices of sporadic groups with Magma.
Department of Mathematics Seminar. October 12, 2007. University of Auckland.
40. From groups to polytopes.
Sixth Slovenian International Conference on Graph Theory, Special Session on Symmetry in Polyhedra and Polytopes, June 26-30, 2007. Bled.
39. The Mathieu groups and their geometries.
Second Irsee Conference on Finite Geometries, September 10-16, 2006. Irsee.
38. A generalization of a construction due to Van Nypelseer.
Pure Mathematics Seminar - Mini Symposium. August 11, 2006. University of Western Australia.
37. Experimental and theoretical results on abstract regular polytopes.
Algebra Seminar. February 27, 2006. University of Kent.
36. Atlases of abstract regular polytopes.
Seminar UG-ULB-VUB on Finite Geometries. November 9, 2005.
35. Atlases of abstract regular polytopes.
Geometry, Algebra, Singularities and Combinatorics seminar. October 24, 2005. Northeastern University.
34. The Suzuki simple groups Sz(q) seen as automorphism groups of some geometric structures.
Number Theory seminar. October 19, 2005. Harvard University.
33. Incidence geometry, finite group theory and computational algebra.
Combinatorics seminar. October 5, 2005. Massachussets Institute of Technology.
*32. Exploring incidence geometries with Magma.
Magma workshop on Group Theory and Algebraic Geometry, University of Warwick, August 22-26, 2005.
31. Les polyèdres de paix et les recouverments.
Contact Day for Highschool teachers and students. June 3, 2005. Université Libre de Bruxelles.
30. Les débouchés professionnels pour les mathématiciens.
Contact Day for Highschool teachers and students. February 25, 2005. Université Libre de Bruxelles.
29. A generalization of a geometric construction due to Van Nypelseer.
EIDMA Symposium 2004, November 25-26, 2004. Mierlo, The Netherlands.
28. La vie d'un chercheur en mathématique.
Haute Ecole Galilée. May 12, 2004.
27. An algorithmic analysis of the intersection property.
Seminar UGent-ULB on Finite Geometries. April 30, 2004. Universiteit Ghent.
26. The residually weakly primitive geometries of HS.
28th Australasian Conference on Combinatorial Mathematics and Combinatorial Computing. December 15-19, 2003. Melbourne.
25. A family of geometries related to the Suzuki tower.
Workshop on Incidence Geometry. December 9-12, 2003. Adelaide.
24. Quotients of a Universal Locally Projective Polytope of type {5,3,5}.
Seminar RUG-ULB on Finite Geometries. May 16, 2003. Free University of Brussels.
23. Residually weakly primitive sporadic geometries.
First Irsee Conference on Finite Geometries, February 16-21, 2003. Irsee.
22. Incidence Geometry, Finite Group Theory and Computer Algebra.
EIDMA Minicourse on "New Approaches to Computing Finite Groups Invariants", April 15-19, 2002, Free University of Brussels.
21. Computational methods in Incidence Geometry.
Computational Algebra Seminar, January 31, 2002. University of Sydney.
20. Incidence Geometry, Finite Group Theory and Computer Algebra.
Joint Seminar Monash University-Deakin University, Melbourne, January 21, 2002.
19. RWPRI and (2T)_1 flag-transitive linear spaces.
Finite Geometries. December 3-8, 2001. Oberwolfach. Picture available
18. Geometries for the Mathieu group M_23.
EIDMA Symposium 2001. October 25-26, 2001. Oostende.
17. Equipped Affine Spaces.
Seminar RUG-ULB on Finite Geometries. May 4, 2001. University of Gent.
16. Incidence Geometry, Finite Group Theory and Computer Algebra.
Universiteit Nijmegen. November 23, 2000.
*15. RWPRI coset geometries: a survey.
INDAM Intensive Session on Groups and Geometries, Milan, May-June, 2000.
14. On a rank five geometry of Meixner for the Mathieu group M_12.
Seminar RUG-ULB on Finite Geometries. March 17, 2000. University of Gent.
13. On a rank five geometry of Meixner for the Mathieu group M_12.
Kolloquium des Instituts der Fachbereich für Mathematik und Informatik. October 26, 1999. Martin-Luther-Universität Halle-Wittenberg.
*12. Incidence geometry and finite groups.
(Moufang) Polygons and (Twin) Buildings. June 21-25, 1999.
11. Constructing coset geometries with MAGMA.
Algebra Seminar. April 23, 1999. University of Sydney.
10. Constructing coset geometries with MAGMA.
Invited talk. April 22, 1999. University of Newcastle, Australia.
*9. Thin regular geometries constructed from finite groups.
21ste Discrete Dag. December 11, 1998.
8. Geometries for the Suzuki simple groups Sz(q).
Combinatorics '98. June 14-20, 1998.
7. The Residually Weakly Primitive Geometries of the Suzuki groups.
Discrete Algebra and Geometry Day. March 20, 1998.
6. Exploring the O'Nan group with MAGMA.
Seminar RUG-ULB on Finite Geometries. January 30, 1998. University of Gent.
5. The RWPRI geometries of the Suzuki simple group Sz(8).
Groups St Andrews 1997 in Bath. July 26-August 9, 1997.
*4. The RWPRI geometries of the Suzuki simple group Sz(8).
Third International Conference on Finite Geometry and Combinatorics. May 18-24, 1997.
3. An Introduction to Research in Incidence Geometry.
April 21, 1997. University of Newcastle, Australia.
2. An Introduction to Research in Incidence Geometry.
Algebra seminar. April 18, 1997. University of Sydney.
1. The RWPRI geometries of the symmetric group Sym(7).
Seminar RUG-ULB on Finite Geometries. February 16, 1996. University of Gent.