ABSTRACT
The reader also might consult Chapter 103 on symplectic and orthogonal geometry for additional background information.
An ovoid in a Ω+(2n, q)-space is a set of qn−1 + 1 points (1-dimensional subspaces) of the associated hyperbolic quadric Q, no two of which lie on a line of Q. When n = 3, we have the ovoid of q2 + 1 points of the Klein quadric which corresponds to a spread of PG(3, q).
