Abstract
A twin building is a pair of buildings along with a certain ’codistance' between chambers of one building, and chambers of the other. All spherical buildings can be regarded as twin buildings (such a building is twinned with itself in a natural way), and the aim of this paper is to give a definition of twin buildings along the lines that Tits originally gave for spherical buildings. This alternative approach via apartments has been used by the first author in studying some group actions on twin buildings.
Similar content being viewed by others
References
Abramenko, P.: Group actions on twin buildings, Bull. Belg. Math. Soc. 3 (1996), 391–406.
Abramenko, P.: Twin Buildings and Applications to S-Arithmetic Groups, Lecture Notes in Math. 1641, Springer-Verlag, New York, 1996.
Brown, K. S.: Buildings, Springer-Verlag, New York, 1989.
Ronan, M.: Lectures on Buildings, Perspect. Math. 7, Academic Press, New York, 1989.
Ronan, M.: Local isometries of twin buildings (to appear).
Ronan, M. and Tits, J.: Twin trees I. Invent. Math. 116 (1994), 463–479.
Tits, J.: Buildings of Spherical Type and Finite BN Pairs, Lecture Notes in Math. 386, Springer-Verlag, New York, 1974.
Tits, J.: A local approach to buildings, In: The Geometric Vein (Coxeter Festschrift), Springer-Verlag, New York, 1981, pp. 519–547.
Tits, J.: Buildings and group amalgamations, In: Groups (St. Andrews 1985), London Math. Soc. Lecture Notes Ser. 121, Cambridge University Press, 1986, pp. 110–127.
Tits, J.: Uniqueness and presentation of Kac–Moody groups over fields, J. Algebra 105 (1987), 542–573.
Tits, J.: Résumé de cours, Ann. College France, 89e anné, 1988–1989, 81–95.
Tits, J.: Résumé de cours, Ann. College France, 90e année, 1989–1990, 87–103.
Tits, J.: Twin buildings and groups of Kac–Moody type, In: Proc. of a Conference on Groups, Combinatorics and Geometry (Durham 1990), London Math. Soc. Lecture Note Ser. 165, Cambridge University Press, 1992, pp. 249–286.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Abramenko, P., Ronan, M. A Characterization of Twin Buildings by Twin Apartments. Geometriae Dedicata 73, 1–9 (1998). https://doi.org/10.1023/A:1005065400830
Issue Date:
DOI: https://doi.org/10.1023/A:1005065400830