Translations of the squares in a finite field and an infinite family of 3-designsShiro IwasakiEur. J. Comb.2003Let q be a prime power withq ≡ −1 (mod 4), and letF be the finite field withq elements and Q the set of nonzero squares in F . Let G = P SL(2, q) be the special linear fractional group on Ω = {∞} ∪ F… (More)