Hrátky s podobností
Simple problems emphasizing the significance of the ratio of similarity in situations concerning circle, square and their parts.
Hyperbelkonstruktionen bei Ausgleichsgeraden und ein verallgemeinerter Pohlkescher Satz
Hyperbolas and orthologic triangles.
Hyperbolic 4-manifolds and conformally flat 3-manifolds
Hyperbolic 4-manifolds and tesselations
Hyperbolic geometry in terms of point-reflections or of line-orthogonality.
Hyperbolic lines in generalized polygons.
Hyperbolic manifolds according to Thurston and Jørgensen
Hyperbolická geometrie v díle M. C. Eschera
Hyperbolische Transformation konvexer Polyeder
Der Artikel beschäftigt sich mit einigen Eigenschaften von hyperbolischen, d. h. gebrochen-affinen, Transformationen, welche für die Bilder konvexer Polyeder bei solchen Transformationen von Bedeutung sind. Es wird eine explizite Darstellung des Bildes eines konvexen Polyeders durch Ecken und Kanten des Urbildpolyeders gewonnen, die Konvexität des Bildes und das Bild des relativen Inneren einer konvexen Menge untersucht.
Hyperbolization of Euclidean ornaments.
Hyperconvexity of ℝ-trees
It is shown that for a metric space (M,d) the following are equivalent: (i) M is a complete ℝ-tree; (ii) M is hyperconvex and has unique metric segments.
Hyperideal polyhedra in hyperbolic 3-space
A hyperideal polyhedron is a non-compact polyhedron in the hyperbolic -space which, in the projective model for , is just the intersection of with a projective polyhedron whose vertices are all outside and whose edges all meet . We classify hyperideal polyhedra, up to isometries of , in terms of their combinatorial type and of their dihedral angles.
Hyperkaehler metrics from projective superspace
This is a brief review of how sigma models in Projective Superspace have become important tools for constructing new hyperkähler metrics.
Hyperplane Arrangements with a Lattice of Regions.
Hyperplane complements of large type.
Hyperplane Coverings and Blocking Sets.
Hyperplanes of dual polar spaces of rank 3 with no subquadrangular quad.
I geometri italiani e i Grundlagen der Geometrie di Hilbert
I geometri italiani e il problema dei fondamenti (1889-1899)