Abstract
We give a detailed description of the structure of the actor 2-crossed module related to the automorphisms of a crossed module of groupoids. This generalises work of Brown and Gilbert for the case of crossed modules of groups, and part of this is needed for work on 2-dimensional holonomy to be developed elsewhere.
Similar content being viewed by others
References
Aof, M. E.-S. A.-F. and Brown, R.: The holonomy groupoid of a locally topological groupoid, Topology and its Applications 47 (1992), 97–113.
Breen, L.: Théorie de Schreier supérieure, Annales Scientifiques de l'Ècole Normale Supérieure 25 (1992), 465–514.
Brown, R.: Topology: a Geometric Account of General Topology, Homotopy Types and the Fundamental Groupoid, Ellis Horwood, Chichester, 1988.
Brown, R.: Groupoids and crossed objects in algebraic topology, Homology, Homotopy Appl. 1 (1999), 1–78.
Brown, R. and Gilbert, N. D.: Algebraic models of 3-types and automorphism structures for crossed modules, Proceedings of the London Mathematical Society (3) 59 (1989), 51–73.
Brown, R. and Higgins, P. J.: On the connection between the second relative homotopy groups of some related spaces, Proceedings of the London Mathematical Society (3) 36 (1978), 193–212.
Brown, R. and Higgins, P. J.: On the algebra of cubes, Journal of Pure and Applied Algebra 21 (1981), 233–260.
Brown, R. and Higgins, P. J.: The equivalence of ∞-groupoids and crossed complexes, Cahiers de Topologie et Géométrie Différentielle 22 (1981), 371–386.
Brown, R. and Higgins, P. J.: Crossed complexes and non-abelian extensions, in Proceedings of the International Conference on Category Theory, Gummersbach, 1981, Lecture Notes in Math. 962, Springer-Verlag, 1982, pp. 39–50.
Brown, R. and Higgins, P. J.: Tensor products and homotopies for ω-groupoids and crossed complexes, Journal of Pure and Applied Algebra 47 (1987), 1–33.
Brown, R. and İçen, İ.: Towards a 2-dimensional notion of holonomy, UWB Math Preprint 00.14, 30p, arXiv math.DG/0009082.
Brylinski, J.-L.: Central extensions and reciprocity laws, Cahiers de Topologie et Géométrie Différentielle Catégoriques 38 (1997), 193–215.
Chase, S.: On representations of small categories and some constructions in algebra and topology, Preprint, Cornell University, 1977, 84 pp.
Conduché, D.: Modules croisés généralisés de longuer 2, Journal of Pure and Applied Algebra 34 (1984), 155–178.
Ehresmann, C.: Structures feuilletées, in Proceedings of the 5th Conference Canadian Math. Congress Montreal 1961, Oeuvres Complètes II-2, pp. 563–624.
Joyal, A. and Street, R.: Braided tensor categories, Advances in Mathematics 102 (1993), 20–78.
Kelly, G. M.: Basic Concepts of Enriched Category Theory, London Math. Soc. Lect. Notes 64, Cambridge University Press, 1986.
Kelly, G. M. and Street, R.: Review of the elements of 2-categories, Lect. Notes in Math. 420, Springer, Berlin, 1974, 75–103.
Labesse, J.-P.: Cohomologie, Stabilisation, et changement de base, Appendix A by L. Clozel, Appendix B by L. Breen, Astérisque 257 (1999), 1–161.
Lue, A. S.-T.: Semi-complete crossed modules and holomorphs of groups, Bulletin. London Mathematical Society 11 (1976), 8–16.
Mac Lane, S.: Categories for the Working Mathematician, Springer, Berlin, 1971.
Moerdijk, I. and Svensson, A. J.: Algebraic classification of equivariant 2-types, Journal of Pure and Applied Algebra 89 (1993), 187–216.
Norrie, K.: Actions and automorphisms of crossed modules, Bulletin de la Société Mathématiques France 118 (1990), 129–146.
Pradines, J.: Théorie de Lie pour les groupoïdes différentiables, relation entre propriétés locales et globales, Comptes Rendus de l'Académie de Sciences. Paris, Série A 263 (1966), 907–910.
Whitehead, J. H. C.: On operators in relative homotopy groups, Annals of Mathematics 49 (1948), 610–640.
Whitehead, J. H. C.: Combinatorial homotopy II, Bulletin. American Mathematical Society 55 (1949), 453–496.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Brown, R., İçen, İ. Homotopies and Automorphisms of Crossed Modules of Groupoids. Applied Categorical Structures 11, 185–206 (2003). https://doi.org/10.1023/A:1023544303612
Issue Date:
DOI: https://doi.org/10.1023/A:1023544303612