講題：On the size of maximal binary codes
講者：俞韋亘副教授(國立中央大學數學系)
時間：113年10月11日(星期五)下午16:00-17:30
地點：民生校區五育樓401教室
摘要：We address the maximum size of binary codes and binary constant weight codes with few distances. Previous works established a number of bounds for these quantities as well as the exact values for a range of small code lengths. As our main results, we determine the exact size of maximal binary codes with two distances for all lengths n≥6 as well as the exact size of maximal binary constant weight codes with 2,3, and 4 distances.