Application de la généralisation du principe de correspondance à la théorie de l'élimination
Atomistic Wilcox lattices in which the ideal of the finite elements is standard
Automorphismengruppen von Translationsebenen, die gewisse verallgemeinerte Elationen besitzen
*-autonomous categories: Once more around the track.
Baer Subplanes of Affine and Projective Planes.
Baer-Elation planes
Bases in incidence structures defined on projective spaces
Bemerkung über gemeinsame Beziehung zwischen kartesischen Gruppen und kartesischen Zahlensystemen
Bemerkung zu einem Satz von Glaubermann.
Bilinear three-cycles on the projective line.
Biternärringe und affine lokale Ternärringe
Blocking sets in for small , and partial spreads in .
Blocking sets which are preserved by transitive collineation groups.
Building Buildings.
Büschel in äquiaffinen Räumen
Catégorie des points d'un espace projectif
Central Automorphisms of Veblenian Nearaffine Planes
The paper deals with nearaffine planes described by H. A. Wilbrink. We consider their central automorphisms, i.e. automorphisms satisfying the Veblen condition, which become central collineations in connected projective planes. Moreover, a concept of central pseudo-automorphism is considered, i.e. some bijections in a nearaffine plane are not automorphisms but they become central collineations in the related projective planes.
Ceva-Dreiecke.
Characterization of epimorphisms of nets by normal decompositions
Characterization of Grassmannians by one class of singular subspaces.