Manage settings
MENU
About this site
In het Nederlands
Home
Researchers
Projects
Organisations
Publications
Infrastructure
Contact
Research Explorer
Your browser does not support JavaScript or JavaScript is not enabled. Without JavaScript some functions of this webapplication may be disabled or cause error messages. To enable JavaScript, please consult the manual of your browser or contact your system administrator.
Researcher
Koen Thas
Profile
Projects
Publications
Activities
Awards & Distinctions
92
Results
2023
A question of Frohardt on -groups, skew translation quadrangles of even order and cyclic STGQs
Koen Thas
A1
Journal Article
in
FORUM OF MATHEMATICS SIGMA
2023
Epimorphisms of generalized polygons, B : The octagons
Joseph Thas
Koen Thas
A2
Journal Article
in
INNOVATIONS IN INCIDENCE GEOMETRY - ALGEBRAIC, TOPOLOGICAL AND COMBINATORIAL
2023
Infinite cyclic projective skew translation quadrangles do not exist
Koen Thas
A1
Journal Article
in
MATHEMATISCHE ANNALEN
2023
Preface
Anton Betten
Dimitri Leemans
Bernhard Mühlherr
James Parkinson
Koen Thas
Hendrik Van Maldeghem
Editorial material
2023
Quantum theory without the axiom of choice, and Lefschetz quantum physics
Koen Thas
A2
Journal Article
in
PHYSICS
2023
Towards the horizons of Tits’s vision : on bandschemes, crowds and 𝔽1-structures
Oliver Lorscheid
Koen Thas
A2
Journal Article
in
INNOVATIONS IN INCIDENCE GEOMETRY - ALGEBRAIC, TOPOLOGICAL AND COMBINATORIAL
2023
2022
Epimorphisms of generalized polygons A : the planes, quadrangles and hexagons
Joseph Thas
Koen Thas
A1
Journal Article
in
JOURNAL OF GEOMETRY AND PHYSICS
2022
2021
Covers of generalized quadrangles : 2. Kantor-Knuth covers and embedded ovoids
Joseph Thas
Koen Thas
A1
Journal Article
in
FINITE FIELDS AND THEIR APPLICATIONS
2021
2020
General quantum theory : unification of classical and modal quantum theories
Koen Thas
A1
Journal Article
in
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
2020
2019
A translation generalized quadrangle in characteristic ≠0 is linear
Koen Thas
A1
Journal Article
in
ADVANCES IN MATHEMATICS
2019
Absolute quantum theory (after Chang, Lewis, Minic and Takeuchi), and a road to quantum deletion
Koen Thas
A1
Journal Article
in
SYMMETRY - BASEL
2019
Automorphisms of Deitmar constructible sets, I : functoriality and trees
Manuel Mérida Angulo
Koen Thas
A1
Journal Article
in
JOURNAL OF GEOMETRY AND PHYSICS
2019
Projective spaces over F1ℓ
Koen Thas
A1
Journal Article
in
JOURNAL OF COMBINATORIAL DESIGNS
2019
2018
Central aspects of skew translation quadrangles, 1
Koen Thas
A1
Journal Article
in
JOURNAL OF ALGEBRAIC COMBINATORICS
2018
Covers of generalized quadrangles
Joseph Thas
Koen Thas
A1
Journal Article
in
GLASGOW MATHEMATICAL JOURNAL
2018
Isospectral drums and simple groups
Koen Thas
A1
Journal Article
in
INTERNATIONAL JOURNAL OF GEOMETRIC METHODS IN MODERN PHYSICS
2018
On the mathematical foundations of mutually unbiased bases
Koen Thas
A1
Journal Article
in
QUANTUM INFORMATION PROCESSING
2018
2017
50 years of finite geometry
James Hirschfeld
Koen Thas
Hendrik Van Maldeghem
Editorial material
2017
Counting points and acquiring flesh
Koen Thas
A2
Journal Article
in
INNOVATIONS IN INCIDENCE GEOMETRY
2017
Deitmar schemes, graphs and zeta functions
Manuel Mérida Angulo
Koen Thas
A1
Journal Article
in
JOURNAL OF GEOMETRY AND PHYSICS
2017
Exploring 𝔽₁-geometry : Deitmar schemes, loose graphs and motives
Manuel Mérida Angulo
Koen Thas
Dissertation
2017
The structure of Deitmar schemes, II : zeta functions and automorphism groups
Manuel Mérida Angulo
Koen Thas
A2
Journal Article
in
COMPTES RENDUS MATHEMATIQUES DE L'ACADEMIE DES SCIENCES = MATHEMATICAL REPORTS OF THE ACADEMY OF SCIENCE
2017
2016
A taste of Weil theory in characteristic one
Koen Thas
Bookchapter
in
Absolute arithmetic and F1-geometry
2016
Absolute arithmetic and F1-geometry
Book editor
2016
The Connes-Consani plane connection
Koen Thas
A1
Journal Article
in
JOURNAL OF NUMBER THEORY
2016
The Weyl functor : introduction to absolute arithmetic
Koen Thas
Bookchapter
in
Absolute arithmetic and F1-geometry
2016
The combinatorial-motivic nature of F1-schemes
Koen Thas
Bookchapter
in
Absolute arithmetic and F1-geometry
2016
Unextendible mutually unbiased bases (after Mandayam, Bandyopadhyay, Grassl and Wootters)
Koen Thas
A1
Journal Article
in
ENTROPY
2016
2015
Classification of skew translation generalized quadrangles, I
Koen Thas
A1
Journal Article
in
DISCRETE MATHEMATICS AND THEORETICAL COMPUTER SCIENCE
2015
2014
Construction and comparison of authentication codes
Jeroen Schillewaert
Koen Thas
A1
Journal Article
in
SIAM JOURNAL ON DISCRETE MATHEMATICS
2014
The structure of Deitmar schemes, I
Koen Thas
A1
Journal Article
in
PROCEEDINGS OF THE JAPAN ACADEMY SERIES A-MATHEMATICAL SCIENCES
2014
2013
Local half Moufang quadrangles
Koen Thas
A1
Journal Article
in
DESIGNS CODES AND CRYPTOGRAPHY
2013
2012
A course on elation quadrangles
Koen Thas
Book
2012
Isomorphisms of groups related to flocks
Koen Thas
A1
Journal Article
in
JOURNAL OF ALGEBRAIC COMBINATORICS
2012
2011
Generalized quadrangles from a local point of view
Koen Thas
A2
Journal Article
in
JOURNAL OF GEOMETRY
2011
Order in building theory
Koen Thas
C1
Conference
2011
The 2-transitive transplantable isospectral drums
Jeroen Schillewaert
Koen Thas
A1
Journal Article
in
SYMMETRY INTEGRABILITY AND GEOMETRY-METHODS AND APPLICATIONS
2011
2010
A theorem of Cohen on parapolar spaces
Ernest E Shult
Koen Thas
A1
Journal Article
in
COMBINATORICA
2010
Bounds on partial ovoids and spreads in classical generalized quadrangles
Stefaan De Winter
Koen Thas
A2
Journal Article
in
INNOVATIONS IN INCIDENCE GEOMETRY
2010
Hearing shapes of drums : mathematical and physical aspects of isospectrality
Olivier Giraud
Koen Thas
A1
Journal Article
in
REVIEWS OF MODERN PHYSICS
2010
On the number of points of a hypersurface in finite projective space (after J.-P. Serre)
Koen Thas
A1
Journal Article
in
ARS COMBINATORIA
2010
2009
Finite bn-pairs of rank 2, I
Koen Thas
A2
Journal Article
in
INNOVATIONS IN INCIDENCE GEOMETRY
2009
Singer quadrangles
Stefaan De Winter
EE Shult
Koen Thas
Book
2009
Subquadrangles of order s of generalized quadrangles of order (s,s^2)
Joseph Thas
Koen Thas
A2
Journal Article
in
INNOVATIONS IN INCIDENCE GEOMETRY
2009
The geometry of generalized Pauli operators of N-qudit Hilbert space, and an application to MUBs
Koen Thas
A1
Journal Article
in
EPL
2009
2008
A Kantor family admitting a normal F-factor constitutes a p-group
Koen Thas
A1
Journal Article
in
ADVANCES IN GEOMETRY
2008
A generalized quadrangle of order (s, t) with center of transitivity is an elation quadrangle if s <= t
Koen Thas
A1
Journal Article
in
DESIGNS CODES AND CRYPTOGRAPHY
2008
Elation generalized quadrangles with extra automorphisms and trivial spans
Koen Thas
A1
Journal Article
in
EUROPEAN JOURNAL OF COMBINATORICS
2008
Finite projective planes, Fermat curves, and Gaussian periods
Koen Thas
D Zagier
A1
Journal Article
in
JOURNAL OF THE EUROPEAN MATHEMATICAL SOCIETY
2008
Generalized quadrangles admitting a sharply transitive Heisenberg group
Stefaan De Winter
Koen Thas
A1
Journal Article
in
DESIGNS CODES AND CRYPTOGRAPHY
2008
Geometric characterizations of finite Chevalley groups of type B-2
Koen Thas
Hendrik Van Maldeghem
A1
Journal Article
in
TRANSACTIONS OF THE AMERICAN MATHEMATICAL SOCIETY
2008
Note on the existence of translation nets
Koen Thas
A1
Journal Article
in
DESIGNS CODES AND CRYPTOGRAPHY
2008
Solution of a question of Knarr
Koen Thas
A1
Journal Article
in
PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY
2008
2007
A question of Kantor on elations of dual translation generalized quadrangles
Koen Thas
A1
Journal Article
in
ADVANCES IN GEOMETRY
2007
A stabilizer lemma for translation generalized quadrangles
Koen Thas
A1
Journal Article
in
EUROPEAN JOURNAL OF COMBINATORICS
2007
Can one hear the shape of a Lie-type geometry?
Koen Thas
A1
Journal Article
in
INVERSE PROBLEMS
2007
Isospectral drums in R-2, involution graphs and Euclidean TI-domains
Koen Thas
A1
Journal Article
in
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
2007
On the p-modular cohornology algebra of a finite p-group and a theorem of Serre
Koen Thas
A1
Journal Article
in
COMPTES RENDUS MATHEMATIQUE
2007
The automorphism group of Payne derived generalized quadrangles
Stefaan De Winter
Koen Thas
A1
Journal Article
in
ADVANCES IN MATHEMATICS
2007
2006
.PSLn(q) as operator group of isospectral drums
Koen Thas
A1
Journal Article
in
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
2006
Determination of generalized quadrangles with distinct elation points
Koen Thas
A1
Journal Article
in
JOURNAL OF ALGEBRAIC COMBINATORICS
2006
Elation generalized quadrangles of order (q, q(2)) q even, with a classical subquadrangle of order q
Koen Thas
A1
Journal Article
in
ADVANCES IN GEOMETRY
2006
Finite translation generalized quadrangles: old results, new results, open problems
Joseph Thas
Koen Thas
C1
Conference
2006
Foundations of elation generalized quadrangles
Koen Thas
SE PAYNE
A1
Journal Article
in
EUROPEAN JOURNAL OF COMBINATORICS
2006
Generalized quadrangles of order (p, t) admitting a 2-transitive regulus, p a prime
Koen Thas
A1
Journal Article
in
JOURNAL OF COMBINATORIAL THEORY SERIES A
2006
Generalized quadrangles with an abelian Singer group
Stefaan De Winter
Koen Thas
A1
Journal Article
in
DESIGNS CODES AND CRYPTOGRAPHY
2006
Kac's question, planar isospectral pairs and involutions in projective space
Koen Thas
A1
Journal Article
in
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
2006
Kac's question, planar isospectral pairs and involutions in projective space, II : classification of generalized projective isospectral data
Koen Thas
A1
Journal Article
in
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL
2006
Subquadrangles of order s of generalized quadrangles of order (s, s^2), part III
Joseph Thas
Koen Thas
A1
Journal Article
in
JOURNAL OF COMBINATORIAL THEORY SERIES A
2006
Translation generalized quadrangles
Joseph Thas
Koen Thas
Hendrik Van Maldeghem
Book
2006
Translation generalized quadrangles in even characteristic
Joseph Thas
Koen Thas
A1
Journal Article
in
COMBINATORICA
2006
2005
Generalized quadrangles admitting PSL (2,q) x PSL (2,q)
Koen Thas
A1
Journal Article
in
JOURNAL OF COMBINATORIAL DESIGNS
2005
Generalized quadrangles with an ovoid that is translation with respect to opposite flags
A Offer
Koen Thas
Hendrik Van Maldeghem
A1
Journal Article
in
ARCHIV DER MATHEMATIK
2005
Moufang-like conditions for generalized quadrangles and classification of all finite quasi-transitive generalized quadrangles
Koen Thas
Hendrik Van Maldeghem
A1
Journal Article
in
DISCRETE MATHEMATICS
2005
Some basic questions and conjectures on elation generalized quadrangles, and their solutions
Koen Thas
A1
Journal Article
in
BULLETIN OF THE BELGIAN MATHEMATICAL SOCIETY-SIMON STEVIN
2005
2004
On a conjecture of W. M. Kantor, and strongly irreducible groups acting on generalized quadrangles
Koen Thas
A1
Journal Article
in
FORUM MATHEMATICUM
2004
Symmetry in Finite Generalized Quadrangles
Koen Thas
Book
2004
2003
A characterization of the classical generalized quadrangle 2(5, q) and the nonexistence of certain near polygons
Koen Thas
A1
Journal Article
in
JOURNAL OF COMBINATORIAL THEORY SERIES A
2003
Finite flag-transitive projective planes: a survey and some remarks
Koen Thas
A1
Journal Article
in
DISCRETE MATHEMATICS
2003
Notes on elation generalized quadrangles
SE Payne
Koen Thas
A1
Journal Article
in
EUROPEAN JOURNAL OF COMBINATORICS
2003
On semi quadrangles
Koen Thas
A1
Journal Article
in
ARS COMBINATORIA
2003
Symmetry in generalized quadrangles
Koen Thas
A1
Journal Article
in
DESIGNS CODES AND CRYPTOGRAPHY
2003
Translation generalized quadrangles for which the translation dual arises from a flock
Koen Thas
A1
Journal Article
in
GLASGOW MATHEMATICAL JOURNAL
2003
2002
A theorem concerning nets arising from generalized quadrangles with a regular point.
Koen Thas
A1
Journal Article
in
DESIGNS CODES AND CRYPTOGRAPHY
2002
Automorphisms and combinatorics of finite generalized quadrangles
Koen Thas
Dissertation
2002
Classification of span-symmetric generalized quadrangles of order s
Koen Thas
A1
Journal Article
in
ADVANCES IN GEOMETRY
2002
Generalized quadrangles with a spread of symmetry and near polygons.
Bart De Bruyn
Koen Thas
A1
Journal Article
in
ILLINOIS JOURNAL OF MATHEMATICS
2002
Nonexistence of complete (st-t/s)-arcs in generalized quadrangles of order (s, t), I
Koen Thas
A1
Journal Article
in
JOURNAL OF COMBINATORIAL THEORY SERIES A
2002
On generalized quadrangles with some concurrent axes of symmetry
Koen Thas
A1
Journal Article
in
BULLETIN OF THE BELGIAN MATHEMATICAL SOCIETY-SIMON STEVIN
2002
The classification of generalized quadrangls with two translation points
Koen Thas
A2
Journal Article
in
BEITRAGE ZUR ALGEBRA UND GEOMETRIE
2002
2001
Automorphisms and characterizations of finite generalized quadrangles
Koen Thas
C1
Conference
2001
On symmetries and translation generalized quadrangles
Koen Thas
P1
Conference
2001