Table of Contents
Volume 2013, Article ID 589362, 3 pages
Research Article

Note on a Class of Subsets of AG(3, q) with Intersection Numbers 1, q and n with respect to the Planes

Dipartimento di Ingegneria Civile, Seconda Università degli Studi di Napoli, Real Casa dell’Annunziata, Via Roma 29, 81031 Aversa, Italy

Received 28 June 2013; Accepted 8 October 2013

Academic Editor: Changzheng Qu

Copyright © 2013 Vito Napolitano. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


We give a new and correct proof of a result of O. Ferri and S. Ferri (1995) on -caps of in this paper; moreover we prove that sets of of type with respect to the planes of have size at most with equality if and only if is a cap.