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A characterization of exterior lines of certain sets of points in PG (2, q)
Authors:A Blokhuis  H A Wilbrink
Institution:(1) Dept. of Mathematics and Computer Science, Technological University Eindhoven, Postbus 513, 5600 MB Eindhoven, The Netherlands
Abstract:Let A and B be disjoint sets of points in PG(2, q) the Desarguesian projective plane of order q, with |A|geq, |B|=q+1, such that each line through a point of A meets B (just once). Then B is a line.
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