%0 Book
%T An  improved bound on the cardinality of the minimal pairwise balanced designs on 18 points with maximum block size 4
%A Roberts, Ian T.
%A D’Arcy, Sue
%A Egan, Judith
%A Grüttmüller, Martin
%S Preprints aus dem Institut für Mathematik
%D 2005
%C Germany; Rostock
%G English
%F 1987109260
%O Ian T. Roberts, Sue D’Arcy, Judith Egan, Martin Grüttmüller
%X The cardinality of the minimal pairwise balanced designs on v elements with largest block size k is denoted by g(k)(v). It is known that 31 <= g(4)(18) <= 33. In this paper we show that g(4)(18) =/ 31. <eng>
%L 510
%9 Text
%R 10.18453/rosdok_id00005893
%U https://purl.uni-rostock.de/rosdok/id00005893
%U https://doi.org/10.18453/rosdok_id00005893