nLab Lascar group

The Lascar group Gal LTGal_L T is a variant of the Galois group in model theory attached to a first order theory.


  • D. Lascar, On the category of models of a complete theory, J. Symbolic Logic 47 (1982), no. 2, 249–266; MR84g:03055 doi
  • Martin Ziegler, Introduction to the Lascar group, in: Tits buildings and the model theory of groups (Würzburg, 2000), 279–298,

    London Math. Soc. Lecture Note Ser., 291, Cambridge Univ. Press, Cambridge, 2002, MR2004j:03046, doi, (Preprint version here.)

  • E. Casanovas, D. Lascar, A. Pillay, M. Ziegler, Galois groups of first order theories, J. Math. Log. 1 (2001), no. 2, 305–319, MR2003e:03068 doi, (Preprint version here.)

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