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Items for "spread"

Two-transitive ovals

An oval 𝒪 of a projective plane is called two-transitive if there is a collineation group G fixing 𝒪 and acting 2-transitively on its points...

Keywords: Suzuki group, Projective plane, oval, spread, symplectic translation plane, Lneburg plane

03/2006 | Advances in Geometry, Walter de Gruyter
Completely regular ovals

The following result concerning completely regular ovals is proved: Let &Pgr; be a projective plane of even order and let 𝒪 be a completely regular oval with nucleus N...

Keywords: Projective plane, oval, spread, symplectic translation plane

07/2006 | Advances in Geometry, Walter de Gruyter
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

01/2007 | Advances in Geometry, Walter de Gruyter
Mechanisms of invasion: establishment, spread and persistence of introduced seaweed populations

Understanding the mechanisms that facilitate or inhibit invasion of exotic seaweeds is crucial in assessing the threat posed by their incursion and to define control options...

Keywords: establishment, invasion process, life history characteristics, management, persistence, spread

12/2007 | Botanica Marina, Walter de Gruyter