(3) as a symmetric (36, 15, 6)-design
Packing graphs: The packing problem solved.
Parallelism in diagram geometry.
Partial Geometries in Finite Affine Spaces.
Partial Ovoids and Partial Spreads of Classical Finite Polar Spaces
2000 Mathematics Subject Classification: 05B25, 51E20.We survey the main results on ovoids and spreads, large maximal partial ovoids and large maximal partial spreads, and on small maximal partial ovoids and small maximal partial spreads in classical finite polar spaces. We also discuss the main results on the spectrum problem on maximal partial ovoids and maximal partial spreads in classical finite polar spaces.The research of the fourth author was also supported by the Project Combined algorithmic...
Partial parallel classes in Steiner systems
Partial Spreads in Finite Projective Spaces and Partial Designs.
Partial Spreads, Packings and Hermitian Manifolds in PG (3, q).
Perp-systems and partial geometries.
Perspectivities in Irreducible Collineation Groups of Projective Planes. I.
Piani di traslazione derivabili
Plane models of semi-biplanes.
Plans projectifs d'ordre 16 ayant un groupe de Frobenius d'ordre.
Point Sets with Uniformity Properties and Orthogonal Hypercubes.
Point-line characterizations of Lie geometries.
Polyèdres finis de dimension 2 à courbure et de rang 2
On définit localement la notion de polyèdre de rang deux pour un polyèdre fini de dimension deux à courbure négative ou nulle. On montre que le revêtement universel d’un tel espace est soit le produit de deux arbres, soit un immeuble de Tits euclidien de rang deux.
Polyhedra with specified links
Projective bundles.
Projective planes of order 10 do not have a collineation of order 3.
Projective planes of order 12 do not have a non-abelian group of order 6 as a collineation group.