Geodesic
Universal covers of geometries of far away type
Journal of Algebraic Combinatorics, Tome 18 (2003) no. 3, pp. 211-243.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: The geometries studied in this paper are obtained from buildings of spherical type by removing all chambers at non-maximal distance from a given element or flag. I consider a number of special cases of the above construction chosen among those which most frequently appear in the literature, proving that the resulting geometry is always simply connected but for three cases of small rank defined over $GF(2)$ and $GF(4)$. I also compute the universal cover in those exceptional cases.
Classification : Many, of, them, also, appear, in, connection, with, embeddings, of, buildings, of, spherical, type,, as, affine, expansions, of, some, of, those, embeddings, (see!!par!![16])
Keywords: buildings, universal covers, embeddings, binary codes 
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     author = {Pasini, Antonio},
     title = {Universal covers of geometries of far away type},
     journal = {Journal of Algebraic Combinatorics},
     pages = {211--243},
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     number = {3},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2003__18_3_a2/}
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Pasini, Antonio. Universal covers of geometries of far away type. Journal of Algebraic Combinatorics, Tome 18 (2003) no. 3, pp. 211-243. http://geodesic.mathdoc.fr/item/JAC_2003__18_3_a2/