Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Pieter Vandecasteele"'
Autor:
Schroffner, Paul
Publikováno v:
Zeitschrift für katholische Theologie, 2013 Jan 01. 135(2/3), 391-393.
Externí odkaz:
https://www.jstor.org/stable/24171536
Autor:
Basset, Guy
Publikováno v:
Revue des Sciences philosophiques et théologiques, 2009 Jul 01. 93(3), 692-694.
Externí odkaz:
https://www.jstor.org/stable/44629946
Autor:
D'Agostino, Simone
Publikováno v:
Gregorianum, 2009 Jan 01. 90(3), 687-688.
Externí odkaz:
https://www.jstor.org/stable/23582206
Autor:
B. De Bruyn, Pieter Vandecasteele
Publikováno v:
Discrete Mathematics
In De Bruyn (2003) [4] it was shown that the dual polar space DH(2n-1,4), n>=2, has a sub-near 2n-gon G"n with a large automorphism group. In this paper, we classify the valuations of the near octagon G"4. We show that each such valuation is either c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3bb4ff41234baf38ff2771cbb0fb8ce
https://doi.org/10.1016/j.disc.2009.09.013
https://doi.org/10.1016/j.disc.2009.09.013
Autor:
B. De Bruyn, Pieter Vandecasteele
Publikováno v:
Graphs and Combinatorics. 23:601-623
Let Hn, n ≥ 2, be the near 2n-gon on the 2-factors of a complete graph with 2n + 2 vertices. In this paper, we classify the valuations of the near octagon H4. We use this classification to study isometric full embeddings of H4 into DQ(8,2) and DH(7
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3275ce91631680b7621ba66a696780f7
https://doi.org/10.1007/s00373-007-0759-3
https://doi.org/10.1007/s00373-007-0759-3
Autor:
Pieter Vandecasteele, Bart De Bruyn
Publikováno v:
European Journal of Combinatorics. 28:410-428
We classify all dense near octagons with three points on each line.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c9033f435fc2436be582b1dd2e59c05
https://doi.org/10.1016/j.ejc.2005.06.002
https://doi.org/10.1016/j.ejc.2005.06.002
Autor:
Pieter Vandecasteele, Bart De Bruyn
Publikováno v:
Annals of Combinatorics. 10:193-210
We determine all distance-2-sets and all valuations of the 11 slim dense near hexagons. We consider this as a necessary step in order to classify all slim dense near octagons. These near octagons will be classified in a forthcoming paper.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38aeaaa231e626aed616b9c1f7f0af6b
https://doi.org/10.1007/s00026-006-0282-x
https://doi.org/10.1007/s00026-006-0282-x
Autor:
Bart De Bruyn, Pieter Vandecasteele
Publikováno v:
Journal of Combinatorial Designs. 14:214-228
Valuations of dense near polygons were introduced in 16. In the present paper, we classify all valuations of the near hexagons 1 and 2, which are related to the respective Witt designs S(5,6,12) and S(5,8,24). Using these classifications, we prove th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69b4cdf0cdf7e5c8d3c206dd80043b5c
https://doi.org/10.1002/jcd.20074
https://doi.org/10.1002/jcd.20074
Autor:
Bart De Bruyn, Pieter Vandecasteele
Publikováno v:
Journal of Combinatorial Theory, Series A. 112:194-211
Valuations were introduced in De Bruyn and Vandecasteele (Valuations of near polygons,preprint, 2004) as a very important tool for classifying near polygons. In the present paper we study valuations of dual polar spaces. We will introduce the class o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc5e8c4c6f90f32c9a0902c98f98163d
https://doi.org/10.1016/j.jcta.2005.02.001
https://doi.org/10.1016/j.jcta.2005.02.001
Autor:
Bart De Bruyn, Pieter Vandecasteele
Publikováno v:
Glasgow Mathematical Journal. 47:347-361
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c088e41effa9d52913139093ce2beab3
https://doi.org/10.1017/s0017089505002582
https://doi.org/10.1017/s0017089505002582