An improved bound on the cardinality of the minimal pairwise balanced designs on 18 points with maximum block size 4 Roberts, Ian T. (VerfasserIn) D’Arcy, Sue (VerfasserIn) Egan, Judith (VerfasserIn) Grüttmüller, Martin , 1970- (VerfasserIn) Text Text 2005 2005 eng electronic resourceremoteComputermedienOnline-Ressource1 Online-Ressource (17 Seiten) 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> Open Access Urheberrechtsschutz 1.0 Ian T. Roberts, Sue D’Arcy, Judith Egan, Martin Grüttmüller 510 https://purl.uni-rostock.de/rosdok/id00005893 An improved bound on the cardinality of the minimal pairwise balanced designs on 18 points with maximum block size 4--(DE-627)494486449 urn:nbn:de:gbv:28-rosdok_id00005893-0 doi: 10.18453/rosdok_id00005893 oclc: 1621699670 ppn: (DE-627)1987109260