Ueber eine Erweiterung des Begriffs von Parallelflächen.
Ueber gewisse Probleme aus der Theorie der Oberfläche.
Ueber Minimalflächen. Zweite Abhandlung.
Ueber Normalen an algebraische Flächen
Ueber unstetige Lösungen in der Variationsrechnung.
Unduloids and their geometry
In this paper we consider non-compact cylinder-like surfaces called unduloids and study some aspects of their geometry. In particular, making use of a Kenmotsu-type representation of these surfaces, we derive explicit formulas for the lengths and areas of arbitrary segments, along with a formula for the volumes enclosed by them.
Uniqueness results for the Minkowski problem extended to hedgehogs
The classical Minkowski problem has a natural extension to hedgehogs, that is to Minkowski differences of closed convex hypersurfaces. This extended Minkowski problem is much more difficult since it essentially boils down to the question of solutions of certain Monge-Ampère equations of mixed type on the unit sphere of ℝn+1. In this paper, we mainly consider the uniqueness question and give first results.
Uniqueness theorems for some open and closed surfaces in three-space
Universal natural shapes
Univerzální přírodní tvary
Untersuchungen über einige Puncte aus der allgemeinen Theorie der Flächen
Untersuchungen über orthogonale Flächensysteme
Untersuchungen zu einem hyperoskulierenden Büschel von Kegelschnitten.
Určování nekonečně vzdálených prvků prostorových útvarů geometrických
Variational properties of the discrete Hilbert-Einstein functional
Vector curvature of a surface in a Hilbert space and the Gauss theorem.
Verallgemeinerte Regelflächen.
Vertices of space curves
Verwendung der Ausdehnungslehre für die allgemeine Theorie der Polaren und den Zusammenhang algebraischer Gebilde.
Visualization of configuration spaces of polygonal linkages.