The inner-product of iso-taxicab geometry.
The Tangent cone of an Aleksandrov space of curvature.
The visual sphere of Teichmüller space and a theorem of Masur-Wolf.
Transformations of Robertson-Walker spacetimes preserving separation zero.
Two-dimensional Helmholtz spaces.
Two-distance preserving functions.
Über isophotische Flächenstücke bei geometrischer Parallelbeleuchtung
Ueber die sogenannte Nicht-Euklidische Geometrie
Ultrametric sets in Euclidean point spaces.
Unit-circle-preserving mappings.
Wedge product of forms in synthetic differential geometry
Weil prolongations of Banach manifolds in an analytic model of
Zone and double zone diagrams in abstract spaces
A zone diagram of order n is a relatively new concept which was first defined and studied by T. Asano, J. Matoušek and T. Tokuyama. It can be interpreted as a state of equilibrium between n mutually hostile kingdoms. Formally, it is a fixed point of a certain mapping. These authors considered the Euclidean plane with finitely many singleton-sites and proved the existence and uniqueness of zone diagrams there. In the present paper we generalize this concept in various ways. We consider general sites...
Глобально и локально выпуклые многогранники.
О групповой и феноменологической симметриях в геометрии.
О единичных базах евклидовой метрики.
О множествах с почти целочисленными расстояниями
О некоторых минимальных условиях определяющих изометрические и подобные отображения.
Об одном характеристическом свойстве изометрических и подобных отображений
Пример одномерного жесткого множества на плоскости