The Geometry of Spaces of Projections in C*-Algebras

On geometries of the projective matrix s

On geometries of the projective matrix space

✍ Binyamin Schwarz; Abraham Zaks 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 137 KB

Full Embeddings of (α, β) -Geometries in

Full Embeddings of (α, β) -Geometries in Projective Spaces

✍ Sara Cauchie; Frank De Clerck; Nicholas Hamilton 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 118 KB

The incidence structures known as (α, β)-geometries are a generalization of partial geometries and semipartial geometries. For an (α, β)-geometry fully embedded in PG(n, q), the restriction to a plane turns out to be important. Planes containing an antiflag of the (α, β)-geometry can be divided into

Applications of Some Properties of the C

Applications of Some Properties of the Canonical Module in Computational Projective Algebraic Geometry

✍ Marc Chardin 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 308 KB

We here develop some new algorithms for computing several invariants attached to a projective scheme (dimension, Hilbert polynomial, unmixed part,... ) that are based on liaison theory and therefore connected to properties of the canonical module. The main features of these algorithms are their simp

Classification of Embeddings of the Flag

Classification of Embeddings of the Flag Geometries of Projective Planes in Finite Projective Spaces, Part 1

✍ Joseph A. Thas; Hendrik Van Maldeghem 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 156 KB

The flag geometry 1=(P, L, I) of a finite projective plane 6 of order s is the generalized hexagon of order (s, 1) obtained from 6 by putting P equal to the set of all flags of 6, by putting L equal to the set of all points and lines of 6, and where I is the natural incidence relation (inverse conta

Classification of Embeddings of the Flag

Classification of Embeddings of the Flag Geometries of Projective Planes in Finite Projective Spaces, Part 2

✍ Joseph A. Thas; Hendrik Van Maldeghem 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 173 KB

Classification of Embeddings of the Flag

Classification of Embeddings of the Flag Geometries of Projective Planes in Finite Projective Spaces, Part 3

✍ Joseph A. Thas; Hendrik Van Maldeghem 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 214 KB

The flag geometry 1=(P, L, I) of a finite projective plane 6 of order s is the generalized hexagon of order (s, 1) obtained from 6 by putting P equal to the set of all flags of 6, by putting L equal to the set of all points and lines of 6, and where I is the natural incidence relation (inverse conta