A new line Involution and the Classification Process
A Pieri-type formula for even orthogonal Grassmannians
We study the cohomology ring of the Grassmannian G of isotropic n-subspaces of a complex 2m-dimensional vector space, endowed with a nondegenerate orthogonal form (here 1 ≤ n < m). We state and prove a formula giving the Schubert class decomposition of the cohomology products in H*(G) of general Schubert classes by "special Schubert classes", i.e. the Chern classes of the dual of the tautological vector bundle of rank n on G. We discuss some related properties of reduced decompositions of "barred...
Bemerkungen über den Zusammenhang der Flächen
Charakteristiken und Schnittzahlformeln für p-l-s-Kegelschnitte
Die Homologiegruppen der Mannigfaltigkeit, die aus den linearen k-Räumen auf einer nicht-ausgearteten 2k-Quadrik besteht
Die klassisch-projektive Natur der Kettengeometrien endlicher Dimensionen.
Distance preserving mappings of Grassmann graphs.
Elementary theorems relating to the geometry of a space of three dimensions and of uniform positive curvature in the fourth dimension.
Group law on the intersection of two quadrics
Immersion Dimension for Real Grassmannians:
Les fonctions métriques fondamentales dans un espace de plusieurs dimensions et de courbure constante
Mappings of the sets of invariant subspaces of null systems.
Normisomorphismen und Normkurven endlichdimensionaler projektiver Desargues-Räume.
On non-localized oriented angles
On the sectional irregularity of congruences.
Projektive Ebenen, die Mannigfaltigkeiten sind.
Quelques théorèmes de géométrie à dimensions
Sugli isomorfismi tra spazi di Grassman
In this paper we prove that any incidence-preserving bijection between the line sets of Grassmann spaces is induced by either a collineation or a correlation.
Über den Rand der projektiven Darstellung von Kettengeometrien auf Grassmann-Mannigfaltigkeiten.
Ueber eine neue Art der Riemann'schen Flächen