A geometric proof of a theorem on antiregularity of generalized quadrangles
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A geometric proof is given in terms of Laguerre geometry of the theorem of Bagchi, Brouwer and Wilbrink, which states that if a generalized quadrangle of order s > 1 has an antiregular point then all of its points are antiregular.
KeywordsAntiregularity Generalized quadrangles Codes Laguerre geometry
Mathematics Subject Classification (2000)51B15 51E12 51E22
© The Author(s) 2011