# Talks

## Invited talks at conferences

* Projective embeddings of spherical buildings at One day meeting on buildings at York University, May 2015.*

* Small maximal independent sets * at 50 years of finite geometries, conference in honor of Jef Thas, Ghent University, Nov 13-15, 2014.

*A common characterization for Severi varieties* at Workshop and Conference on groups
and geometries, Indian statistical institute, Bangalore, Dec 10-21, 2012 (Regretfully declined due to teaching obligations)

*Combinatorics of polar spaces* at The joint international congress of the American and
South African Mathematical Societies, Port Elizabeth, South Africa, 29 November - 3
December 2011

*Geometric authentication codes at Coding theory and cryptography II*, Academy Contact
Forum, Palace of the Academies, Brussels, Belgium, September 21, 2007

## Invited talks at universities

* TBA at University of Newcastle, May 2015.*

* Projective embeddings of spherical buildings at University of Bielefeld, April 2015.*

* Small maximal independent sets at University of Auckland, March 2015.*

*Veronesean representations of Moufang planes} at University of Aberdeen, UK, December 4, 2014.*

*Veronesean representations of Moufang planes}, Birkbeck, London, UK, October 13, 2014.*

* Veronesean representations of Moufang planes}, Cambridge, UK, October 8, 2014.*

*Probabilistic Constructions in Finite geometries <\i>, LSE, May 8, 2014.*

* Coarse equivalences of Euclidean buildings * University of York, York, January 6, 2014.

* The geometries of the Freudenthal-Tits magic Square *, University of Bristol, Bristol , UK, December 11, 2013

* The geometries of the Freudenthal-Tits magic Square *, University of Birmingham, Birmingham , UK, November 7, 2013

* The geometries of the Freudenthal-Tits magic Square *, TUE, Eindhoven , The Netherlands, October 9, 2013

* The geometries of the Freudenthal-Tits magic Square *, TUE, Eindhoven , The Netherlands, October 9, 2013

* Geometry of exceptional Lie algebras la Tits. London Algebra Colloquium, Imperial College, London, UK, May 17, 2013.<\p>
*

* The geometries of the Freudenthal-Tits magic Square *, University of Cambridge, Cambridge , UK, May 15, 2013

*Large Incidence-Free Sets in Geometry*, CSU, San Marcos CA, USA, February 5, 2013

*A Geometric Approach to the Freudenthal-Tits Magic Square*, UC Canterbury, Christchurch,
New Zealand, March 1, 2012

*Recognizing finite polar space combinatorially*, UCSD, San Diego, CA, USA, August 23,
2011

*Infinite Veronesean caps*, UWA, Perth, Australia, April 13, 2010

*A group-theoretic characterization of known counter examples to the planar Kac conjecture*,
UCSD, San Diego, CA, USA, September 29, 2009

*Generalized Veroneseans and their arcs*, at Rocky Mountain algebraic combinatorics
seminar, Colorado State University, Fort Collins, CO, USA, March 13, 2009

*Can you recognize a finite polar space by intersection numbers?*, at Discrete mathematics
seminar, CU Denver, Denver, CO, USA, March 16, 2009

*Characterizations of classical polar spaces by intersection numbers*, at Geometry Seminar,
University Federico II, Naples, Italy, July 10, 2007

## Conference contributions

*Imbrex geometries<\i>, at Buildings 2013, Munster, Germany, October 8, 2013.<\p>
*

*A Combinatorial Characterization of Severi Varieties over Arbitrary Fields* at AMS - MAA joint meeting, San Diego CA, USA, Jan 12, 2013

*Projective planes over quadratic algebras* at Incidence geometry and buildings, Ghent,
Belgium, Feb 6-10, 2012

*The Freudenthal-Tits magic square* at Finite geometries 2011, Irsee, Germany, June
25-29, 2011

*Can one define finite classical polar spaces in a combinatorial way?* at 33 ACCMCC,
Newcastle, Australia, December 6-10, 2009

*Constructions and characterizations of quasi-Hermitian varieties and singular quadrics*
at Normfest, San Antonio, TX, USA, March 26-29, 2009

*Constructions of authentication codes at NATO Advanced Research Workshop Veliko
Tarnovo, Bulgaria, October 6{9, 2008
*

*Characterizations of Veronesean surfaces* at Buildings 2008, U. Munster, Munster,
Germany, September 29 - October 1, 2008

*A characterization result for Veroneseans* at Geometric and algebraic combinatorics 4,
Oisterwijk, The Netherlands, August 16-22, 2008

*A characterisation of Veroneseans* at Combinatorics 2008, Costermano, Italy, June
22-28, 2008

*Minimal codewords in binary Reed-Muller codes* at Sixth Shanghai conference on combinatorics,
Shanghai, China, May 24-28, 2008

*Geometric authentication codes* at 9th Nordic Combinatorial Conference, Bergen, Norway,
November 23-24, 2007

*Characterizations of classical finite polar spaces by intersection numbers*, at Kolloquium
uber Kombinatorik, Magdeburg, Germany, November 16-17, 2007

*Characterizations of finite classical polar spaces by intersection numbers*, at Buildings
2007, U. Munster, Munster, Germany, October 8-11, 2007

*Generalised dual arcs and Veronesean surfaces, with applications to cryptography*, at
Proceedings Optimal Codes and related topics, Balchik, Bulgaria, June 16-22, 2007

*Minimal codewords in Reed-Muller codes*, at Combinatorics 2006, Ischia, Italia, June
25-29, 2006

## Seminar talks at national (with respect to my country of employment at the time) universities

*New Laguerre planes* at Seminar on Incidence Geometry UGent-V.U.B-U.L.B., V.U.B,
Brussels, Belgium, May 6, 2011

*Characterizations of generalized Veroneseans, and their use in cryptography* at Seminar
of Mathematics and statistics, University of Canterbury, Christchurch, New-Zealand,
September 10, 2009

*The 2-transitive transplantable isospectral drums* at Seminar on Incidence Geometry
UGent-U.L.B., Ghent University, Ghent, Belgium, April 3, 2009

*Authentication codes from generalized quadrangles* at Second Bcrypt Ph.D day, K.U.
Leuven, Leuven, Belgium, October 13, 2008

*Generalised Veroneseans and applications* at Bcrypt Ph.D day, U.C.L, Genval, Belgium,
April 30, 2008

*Minimal codewords in Reed-Muller codes* at Seminar Incidence Geometry, Ghent University,
Ghent, Belgium, April 25, 2008

*A characterization result for Veroneseans* at Seminar on Incidence Geometry UGent-
V.U.B-U.L.B., Ghent University, Ghent, Belgium, February 8, 2008

*Generalised dual arcs and Veronesean surfaces, with applications to cryptography* at
Second Ph.D. day of the B.M.S, U.L.B., Brussels, Belgium, September 10, 2007

*A characterization of quadrics by intersection numbers* at Seminar Incidence Geometry,
Ghent University, Ghent, Belgium, January 19, 2007