Algebras, Geometries, and Groups

A conference in memory of Jacques Tits (1930 - 2021). 

When: Tuesday 20th December and Wednesday 21th December 2022 

Where: Académie Royale de Belgique (Rooms Albert II and Salle de marbre) Rue Ducale 1, 1000 Bruxelles 

Programme: A version of the programme is available here

Registration:  List of participants; some pictures of the event are available here


Slides and extra documents kindly sent to us by the speakers are available here.

  • Jean-Pierre BOURGUIGNON (IHES): Reminiscences about Jacques TITS and his relation to IHÉS and the Scientific Community 
  • Michel BRION (Grenoble): Primitive homogeneous varieties 
  • Michel BROUE (Paris): About Complex Reflection Groups 
  • Bernhard MÜHLHERR (Gießen): Buildings and Root Gradings
  • Guy ROUSSEAU (Nancy): Twin masures for Kac-Moody groups over Laurent polynomial rings 
  • Donna TESTERMAN (Lausanne): Overgroups of regular unipotent elements in simple linear algebraic groups
  • Jean-Pierre TIGNOL (Louvain-La-Neuve): Quadratic forms in characteristic 2 and trialitarian triples
  • Richard WEISS (Tufts): Tits Polygons

Sadly, Anne PARREAU and Katrin TENT's talks had to be cancelled.  

Organisers: Pierre-Emmanuel CAPRACE (UCLouvain), Ann DOOMS (VUB), Fabien DURAND (UPJV, SMF), Simone GUTT (ULB), Alain VALETTE (UNeuchatel, SMS), Hendrik VAN MALDEGHEM (UGent), Joost VERCRUYSSE (ULB, BMS). 

With the administrative support of the Belgian Mathematical Society via Céline ESSER (ULiège) and Yvik SWAN (ULB). 


  • Académie Royale de Belgique
  • FWO Scientific Research Network "Coding Theory and Cryptography"
  • FNRS 
  • UCLouvain, UGent, ULB, VUB
  • BMS and SMF