Hill, Landjev, Jones, Storme, and Barat proved in a previous article on caps in PG(5, 3) and PG(6,3) that every 53-cap in PG(5, 3) is contained in the 56-cap of Hill and that there exist complete 48-caps in PG(5,3). The first result was used to lower the upper bound on
1970-2025 CP (Manitoba, Canada) unless otherwise stated.