UC Research Profile - University of Canterbury

Ms Geertrui Van de Voorde

Contact

Department: Mathematics and Statistics

Email: geertrui.vandevoorde@canterbury.ac.nz

Direct Dial: +64 3 3695641

Office: Jack Erskine 724

Languages: English, Dutch

About

Research / Creative works

Networks

Fields of Research

Finite projective geometry
Coding theory
Graph theory

Researcher Summary

My main research interest is finite projective geometry. In particular, I study the interplay between the combinatorial properties of particular sets and their algebraic description.

Moreover, I am interested in the links between finite geometry and other areas. Many open problems in coding theory can be translated into a purely geometrical problem. Similarly, examples of (extremal) graphs often arise from finite geometry.

Subject Area: Disciplines

Mathematics: Pure Mathematics

Prizes and Awards

PhD fellowship ( 2008 - 2010)

PhD fellowship ( 0 - 2021)

Post-doctoral fellowship ( 2012 - 2017)

Research/Scholarly/Creative Works

Oral Presentations

Van de Voorde G. (2019) A geometric view on rank-metric codes. Auckland, New Zealand: Groups and Geometry, 18 Jan 2019.

Van de Voorde G. (2018) Blocking sets in finite projective planes. Dunedin, New Zealand: Colloquium of the New Zealand Mathematical society, 04 Dec 2018.

Van de Voorde GV. (2018) The tragedy of two Baer subplanes. Arco, Italy: Combinatorics 2018, 04 Jun 2018.

Van de Voorde GV. (2017) The number of directions determined by a function over a finite field. CoGeNt seminar, 02 May 2017.

Van de Voorde GV. (2017) The number of points of weight 2 in a linear set on a projective line. Irsee, Germany: Finite Geometries - Fifth Irsee conference (conference on invitation), 11 Sep 2017.

Van de Voorde GV. (2016) KM-arcs. Brussels, Belgium: Joint Seminar UGent-VUB-ULB, 17 Nov 2016.

Additional Publications

Jena D. and Van de Voorde G. (2021) On linear sets of minimum size. Discrete Mathematics 344(3) http://dx.doi.org/10.1016/j.disc.2020.112230.

D’haeseleer J. and Van de Voorde G. (2020) Translation hyperovals and F2-linear sets of pseudoregulus type. Electronic Journal of Combinatorics 27(3): 1-19. http://dx.doi.org/10.37236/8818.

Metsch K. and Van de Voorde G. (2020) On a question of Thas on partial 3-(qⁿ + 1, q + 1, 1) designs. Journal of Combinatorial Designs 28(1): 25-32. http://dx.doi.org/10.1002/jcd.21678.

Sheekey J. and Van de Voorde G. (2020) Rank-metric codes, linear sets, and their duality. Designs, Codes, and Cryptography 88(4): 655-675. http://dx.doi.org/10.1007/s10623-019-00703-z.

Sheekey JOHN., Van De Voorde G. and Voloch JF. (2020) On the Product of Elements with Prescribed Trace. Journal of the Australian Mathematical Society http://dx.doi.org/10.1017/S1446788720000178.

De Beule J. and Van de Voorde G. (2019) The minimum size of a linear set. Journal of Combinatorial Theory. Series A 164: 109-124. http://dx.doi.org/10.1016/j.jcta.2018.12.008.

de Boeck M. and van de Voorde G. (2019) Elation KM-Arcs. Combinatorica 39(3): 501-544. http://dx.doi.org/10.1007/s00493-018-3806-1.

De Boeck M. and Van de Voorde G. (2018) A new lower bound for the size of an affine blocking set. The Electronic Journal of Combinatorics 25(4) P4.40: 11.

D’haeseleer J., Metsch K., Storme L. and Van de Voorde G. (2017) On the maximality of a set of mutually orthogonal Sudoku Latin Squares. Designs, Codes and Cryptography 84(1-2): 143-152. http://dx.doi.org/10.1007/s10623-016-0234-3.

Rottey S. and Van de Voorde G. (2017) Unitals with many Baer secants through a fixed point. Advances in Geometry : 10. http://dx.doi.org/10.1515/advgeom-2017-0010.

De Beule J., Héger T., Szőnyi T. and Van de Voorde G. (2016) Blocking and Double Blocking Sets in Finite Planes. The Electronic Journal of Combinatorics 23(2) P2.5.

De Boeck M. and Van de Voorde G. (2016) A linear set view on KM-arcs. Journal of Algebraic Combinatorics 44(1): 131-164. http://dx.doi.org/10.1007/s10801-015-0661-7.

Van de Voorde G. (2016) Constructing Minimal Blocking Sets Using Field Reduction. Journal of Combinatorial Designs 24(1): 36-52. http://dx.doi.org/10.1002/jcd.21432.

Van de Voorde G. (2016) Desarguesian spreads and field reduction for elements of the semilinear group. Linear Algebra and its Applications 507: 96-120. http://dx.doi.org/10.1016/j.laa.2016.05.038.

De Winter S., Rottey S. and Van de Voorde G. (2015) Linear representations of subgeometries. Designs, Codes and Cryptography 77(1): 203-215. http://dx.doi.org/10.1007/s10623-014-9999-4.

Lavrauw M. and Van de Voorde G.. (2015) Field reduction and linear sets in finite geometry. In Kyureghyan G; Mullen GL; Pott A (Eds). Topics in Finite Fields 632: 271-293. http://dx.doi.org/10.1090/conm/632/12633.

Rottey S. and Van de Voorde G. (2015) Characterisations of elementary pseudo-caps and good eggs. The Electronic Journal of Combinatorics 22(1) P1.49.

Rottey S. and Van de Voorde G. (2015) Pseudo-ovals in even characteristic and ovoidal Laguerre planes. Journal of Combinatorial Theory, Series A 129: 105-121. http://dx.doi.org/10.1016/j.jcta.2014.10.001.

Rottey S., Sheekey J. and de Voorde GV. (2015) Subgeometries in the Andre/Bruck-Bose representation. Finite Fields and Their Applications 35: 115-138. http://dx.doi.org/10.1016/j.ffa.2015.04.002.

Cara P., Rottey S. and Van de Voorde G. (2014) A construction for infinite families of semisymmetric graphs revealing their full automorphism group. Journal of Algebraic Combinatorics 39(4): 967-988. http://dx.doi.org/10.1007/s10801-013-0475-4.

Cara P., Rottey S. and Van de Voorde G. (2014) The isomorphism problem for linear representations and their graphs. Advances in Geometry 14(2): 353-367. http://dx.doi.org/10.1515/advgeom-2013-0040.

Lavrauw M. and Van de Voorde G. (2013) Scattered linear sets and pseudoreguli. The Electronic Journal of Combinatorics 20(1) P15.

Penttila T. and Van de Voorde G. (2013) Extending pseudo-arcs in odd characteristic. Finite Fields and Their Applications 22: 101-113. http://dx.doi.org/10.1016/j.ffa.2013.03.002.

Sziklai P. and Van de Voorde G. (2013) A small minimal blocking set in PG(n, p (t) ), spanning a (t-1)-space, is linear. Designs, Codes and Cryptography 68(1-3): 25-32. http://dx.doi.org/10.1007/s10623-012-9751-x.

Lavrauw M., Storme L. and de Voorde GV. (2011) A proof of the linearity conjecture for k-blocking sets in PG(n, p(3)), p prime. JOURNAL OF COMBINATORIAL THEORY SERIES A 118 3: 808-818. http://dx.doi.org/10.1016/j.jcta.2010.11.013.

Van de Voorde G. (2011) On sets without tangents and exterior sets of a conic. DISCRETE MATHEMATICS 311 20: 2253-2258. http://dx.doi.org/10.1016/j.disc.2011.07.010.

Dodunekov S., Storme L. and Van de Voorde G. (2010) Partial covers of PG(n, q). EUROPEAN JOURNAL OF COMBINATORICS 31 6, SI: 1611-1616. http://dx.doi.org/10.1016/j.ejc.2009.07.008.

Lavrauw M. and Van de Voorde G. (2010) On linear sets on a projective line. DESIGNS CODES AND CRYPTOGRAPHY 56 2-3: 89-104. http://dx.doi.org/10.1007/s10623-010-9393-9.

Lavrauw M., Storme L. and Van de Voorde G.. (2010) Linear codes from projective spaces. In Bruen AA; Wehlau DL (Eds). ERROR-CORRECTING CODES, FINITE GEOMETRIES AND CRYPTOGRAPHY 523: 185-202.

Pepe V., Storme L. and Van de Voorde G. (2010) On codewords in the dual code of classical generalised quadrangles and classical polar spaces. DISCRETE MATHEMATICS 310 22, SI: 3132-3148. http://dx.doi.org/10.1016/j.disc.2009.06.010.

Van de Voorde G. (2010) On the linearity of higher-dimensional blocking sets. ELECTRONIC JOURNAL OF COMBINATORICS 17 1.

Lavrauw M., Storme L., Sziklai P. and de Voorde GV. (2009) An empty interval in the spectrum of small weight codewords in the code from points and k-spaces of PG(n, q). JOURNAL OF COMBINATORIAL THEORY SERIES A 116 4: 996-1001. http://dx.doi.org/10.1016/j.jcta.2008.09.004.

Pepe V., Storme L. and Van de Voorde G. (2009) Small Weight Codewords in the LDPC Codes Arising From Linear Representations of Geometries. JOURNAL OF COMBINATORIAL DESIGNS 17 1: 1-24. http://dx.doi.org/10.1002/jcd.20179.

Fack V., Fancsali SL., Storme L., Van de Voorde G. and Winne J. (2008) Small weight codewords in the codes arising from Desarguesian projective planes. DESIGNS CODES AND CRYPTOGRAPHY 46 1: 25-43. http://dx.doi.org/10.1007/s10623-007-9126-x.

Lavrauw M., Storme L. and de Voorde GV. (2008) On the code generated by the incidence matrix of points and hyperplanes in PG(n,q) and its dual. DESIGNS CODES AND CRYPTOGRAPHY 48 3: 231-245. http://dx.doi.org/10.1007/s10623-008-9203-9.

Lavrauw M., Storme L. and Van de Voorde G. (2008) On the code generated by the incidence matrix of points and k-spaces in PG(n, q) and its dual. FINITE FIELDS AND THEIR APPLICATIONS 14 4: 1020-1038. http://dx.doi.org/10.1016/j.ffa.2008.06.002.

Editorial Work

Algebraic Combinatorics Editor ( 2017 - 2021)
Bulletin of the Belgian Mathematical Society: Simon Stevin Editor ( 2019 - 2021)
Bulletin of the Institute of Combinatorics and its Applications Editor ( 2017 - 2021)
Bulletin of the Institute of Combinatorics and its Applications Editor ( 2017 - 2021)

Review and Refereeing

Algebraic Combinatorics ( 2018 - 2021)

Australasian Journal of Combinatorics ( 2013 - 2021)

Bulletin of the Institute of Combinatorics and its Applications ( 2017 - 2021)

Combinatorica ( 2015 - 2021)

Designs, Codes, and Cryptography ( 2008 - 2021)

Discrete Mathematics ( 2010 - 2021)

European Journal of Combinatorics ( 2017 - 2021)

Finite Fields and Their Applications ( 2010 - 2021)

Journal of Algebraic Combinatorics ( 2012 - 2021)

Journal of Combinatorial Designs ( 2010 - 2021)

Mathematical Reviews database (MathSciNet) ( 2016 - 2021)

Zentralblatt fur Mathematik (zbMATH) ( 2015 - 2021)