New infinite families of 3-designs from algebraic curves over Fq

  • Authors:
  • Byeong-Kweon Oh;Jangheon Oh;Hoseog Yu

  • Affiliations:
  • Department of Applied Mathematics, Sejong University, Seoul, 143-747, Republic of Korea;Department of Applied Mathematics, Sejong University, Seoul, 143-747, Republic of Korea;Department of Mathematical Sciences, Seoul National University, Seoul, 151-747, Republic of Korea

  • Venue:
  • European Journal of Combinatorics
  • Year:
  • 2007

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Abstract

In this paper, we show that the stabilizer subgroup of D"f^+={a@?F"q|f(a)@?(F"q^x)^2} for a f@?F"q[x] without multiple roots can be derived from the stabilizer of D"f^0={a@?F@?"q|f(a)=0}@?{~}. As an application, we construct a family of 3-designs such as 3-(q+1,q-12,(q-1)(q-3)(q-5)16), where q is a prime power such that q=3(mod4) and q=59.