Items for "generalised quadrangle"

The ovoidal hyperplanes of a dual polar space of rank 4

Let π be a thick polar space of rank 4 over a field 𝕂 such that the generalised quadrangle Res⁺(α) of a line α of π which consists of the planes and 3-spaces of π containing α, admits a spread...

Keywords: Dual polar space, generalised quadrangle, hyperplane, ovoid, polar space, spread, symplectic spread