Parallel projection of matroid spheres
Parallelepipeds, nilpotent groups and Gowers norms
In his proof of Szemerédi’s Theorem, Gowers introduced certain norms that are defined on a parallelepiped structure. A natural question is on which sets a parallelepiped structure (and thus a Gowers norm) can be defined. We focus on dimensions and and show when this possible, and describe a correspondence between the parallelepiped structures and nilpotent groups.
Parallelism in diagram geometry.
Parity systems and the delta-matroid intersection problem.
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).
Patterns in 1-additive sequences.
Pavages autosimilaires à similitudes
Penny-Packing and Two-Dimensional Codes.
Pentagonálne teselácie
Perfect factorisations of bipartite graphs and Latin squares without proper subrectangles.
Permanents – a concise survey. (Permanenten – Ein kurzer Überblick.)
Permanents of Hessenberg -matrices revisited.
Permanents of Hessenberg (0,1)-matrices.
Permanents, Pfaffian orientations, and even directed circuits.
Permutations and Copi mats, Chidenguele, Mozambique
Permutations defining convex permutominoes.