Sobre la geometría de la diferencia simétrica.
Some characterization theorems for the discrete holometric space.
Some properties of the discrete holometric space
Some Results on Maps That Factor through a Tree
We give a necessary and sufficient condition for a map deffned on a simply-connected quasi-convex metric space to factor through a tree. In case the target is the Euclidean plane and the map is Hölder continuous with exponent bigger than 1/2, such maps can be characterized by the vanishing of some integrals over winding number functions. This in particular shows that if the target is the Heisenberg group equipped with the Carnot-Carathéodory metric and the Hölder exponent of the map is bigger than...
Some results on metric trees
Using isometric embedding of metric trees into Banach spaces, this paper will investigate barycenters, type and cotype, and various measures of compactness of metric trees. A metric tree (T, d) is a metric space such that between any two of its points there is a unique arc that is isometric to an interval in ℝ. We begin our investigation by examining isometric embeddings of metric trees into Banach spaces. We then investigate the possible images x₀ = π((x₁ + ... + xₙ)/n), where π is a contractive...
Spaces with exceptional fundamental groups.
Spiegelungsgeometrische Darstellung affiner Ebenen auf der Grundlage eines abgeschwächten Schrägspiegelungsbegriffs
Stability of graphs.
Stratification of the discriminant in Reflection groups.
Sur deux suites récurrentes du second ordre, linéaires et homogènes
Sur les cercles tangents à trois cercles et les sphères tangentes à trois ou à quatre sphères
Symmetries of regular four-dimensional polytopes
Symmetries of woven fabrics
Systoles of a family of triangle surfaces.