Research interests


My primary mathematical interests are in the field of groups, graphs and geometries. I'm involved in the program of the classification of finite primitive distance-transitive graphs.

My research has been mainly concentrated on

  •   Distance-regular and Distance-transitive graphs

  •   Sporadic finite simple groups and their geometries

  •   Generalized polygons and their extensions

  •   Permutation Groups

  •   Locally s-transitive groups

  •   Multiplicity-free permutation representations


     


    Scientific meetings and summer schools


    I've been a co-organizer of

  •   Groups and Graphs, Amsterdam, 1989

  •   Summer School on Finite groups and related Geometrical Structures, Udine, 2005

  •   Summer School on Finite Groups and related Geometrical Structures, Dobbiaco-Toblach, 2006

  •   Summer School on Finite Groups and related Geometrical Structures, Venezia, 2007

  •   Summer School on Finite Groups and related Geometrical Structures, Venezia, 2008

  •   Arjeh 60, Eindhoven, 2009.

  •   Summer School on Finite Groups and related Geometrical Structures, Venezia, 2010

  •   Summer School on Finite Groups and related Geometrical Structures, Venezia, 2011

  •   Summer School on Finite Groups and related Geometrical Structures, Venezia, 2013

  •   Summer School on Finite Groups and related Geometrical Structures, Venezia, 2015

  •   Summer School on Finite Groups and related Geometrical Structures, Dobbiaco-Toblach, 2017

  •   Summer School on Finite Groups and related Geometrical Structures, Venezia, 2019