Intriguing sets of quadrics in PG(5, q)
Antonio Cossidente, Francesco Pavese · Advances in Geometry · 2017
Abstract A hemisystem on the Hermitian surface ℋ(3, q 2), q ≥ 7 odd, admitting a subgroup of PΩ-(4, q) of order q 2(q +1) is constructed. Also, a new family of Cameron-Liebler line classes of PG(3, q), q ≥ 5 odd, with parameter (q 2 + 1)/2 is provided.