Rondebosch, Cape Town, 7700, South Africa

Contact Information

T: (+995) 32 299 61 25


Janelidze George


Full Professor
University of Cape Town


The main area of research of G. Janelidze is category theory and its applications in pure mathematics, especially in algebra and topology. This includes: (a) his Galois theory in general categories with various special cases (classical Galois theory, Galois theory of commutative rings in sense of ChaseHarrisonRosenberg and Magid – with earlier publications unrelated to the categorical context, Grothendieck Galois theory, several geometric/topological/simplicial theories of covering maps, and theory of generalized central extensions he developed in joint work with G. M. Kelly); (b) Grothendieck descent theory in algebra and topology (mostly joint work with W. Tholen, and later also with M. Sobral); (c) new links with homological and universal algebra via central extensions, Huq-Smith-Pedicchio commutator theory, protomodular and semi-abelian categories, internal actions and semidirect products, internal categories and crossed modules, and Ursini theory of ideals and ideal determined categories; (d) the so-called Kurosh-Amitsur radical theory; (e) several other topics of research in algebra and general and algebraic topology with one or two publications devoted to each of them.

Education - Scientific Degree

  1. 2013


    Georgian National Academy of Sciences
  2. 1992

    D.Sc. (“Doctor of Science”)

    St.-Petersburg State University
  3. 1978

    Ph.D. (“Candidate of Sciences”)

    Tbilisi State University
  4. 1969-1974


    Tbilisi State University

Professional Experience

  1. 2004 - present
    Full Professor
    University of Cape Town (South Africa)
  2. 1989-2006
    Leading Research Scientist
    A. Razmadze Mathematical Institute
  3. 1985-1989
    Senior Research Scientist
    A. Razmadze Mathematical Institute
  4. 1978-1985
    Junior Research Scientist
    A. Razmadze Mathematical Institute
  5. 1975-1978
    A. Razmadze Mathematical Institute