-rozměrné konfigurace
-rozměrné konfigurace. II.
Radical parallelism on projective lines and non-linear models of affine spaces.
Radical relations in unitary, symplectic, and orthogonal groups.
Ramsey partitions and proximity data structures
This paper addresses two problems lying at the intersection of geometric analysis and theoretical computer science: The non-linear isomorphic Dvoretzky theorem and the design of good approximate distance oracles for large distortion.We introduce the notion of Ramsey partitions of a finite metric space, and show that the existence of good Ramsey partitions implies a solution to the metric Ramsey problem for large distortion (also known as the non-linear version of the isomorphic Dvoretzky theorem,...
Random walk on a building of type Ãr and brownian motion of the Weyl chamber
In this paper we study a random walk on an affine building of type Ãr, whose radial part, when suitably normalized, converges toward the brownian motion of the Weyl chamber. This gives a new discrete approximation of this process, alternative to the one of Biane (Probab. Theory Related Fields89 (1991) 117–129). This extends also the link at the probabilistic level between riemannian symmetric spaces of the noncompact type and their discrete counterpart, which had been previously discovered by Bougerol...
Range of the k-dimensional Radon transform in real hyperbolic spaces.
Rank three geometries associated with .
Rank three residually connected geometries for , revisited.
Raster in der Perspektive
Ratios of points in affine spaces over modules. (Teilverhältnisse in affinen Räumen über Moduln.)
Räumliche Zindlerkurven.
Rayon de la sphère circonscrite au tétraèdre en fonction des arêtes
Real analytic projective planes with large automorphism groups.
Real equivalence of complex matrix pencils and complex projections of real Segre varieties.
Realizations of regular apeirotopes.
Realizations of regular polytopes.
Receding polar regions of a spherical building and the center conjecture
We introduce the notion of a polar region of a spherical building and use some simple observations about polar regions to give elementary proofs of various fundamental properties of root groups. We combine some of these observations with results of Timmesfeld, Balser and Lytchak to give a new proof of the center conjecture for convex chamber subcomplexes of thick spherical buildings.
Recherche des graphes des matrices de Coxeter hyperboliques d’ordre
Recherche des sections circulaires des quadriques.