Contents

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In PG(3,q),q=ph a prime power and h having no odd factor, any (q2+1)-set of class [0,m,n]1 in an ovoid and any (q2+q+1) set of class [1,m,n] containing at least two lines is either a plane or a cone projecting an oval from a point

Stefano Innamorati 1, Mauro Zannetti1
1Department of Industrial and Information Engineering and of Economics University of L’Aquila piazzale Emesto Pontieri, 1 Monteluco di Roio I-67100 L’Aquila Italy

Abstract

In PG(3,P2h), ovoids and cones projecting an oval from a point are characterized as three character sets with respect to lines and planes, respectively.

Keywords: Sets of class [0,m,n] Sets of class [1.m.n]2 Three character sets. Ovoids Cones