3 papers
math.DG2021
ccc-Autoevolutes
Hermann Karcher, Ekkehard-H. Tjaden
ccc-Autoevolutes are closed constant curvature space curves which are their own evolutes. A modified Frenet equation produces constant curvature curves such that the curve on $[0,…
math.DG2015
Channel linear Weingarten surfaces
U. Hertrich-Jeromin, K. Mundilova, E. -H. Tjaden
We demonstrate that every non-tubular channel linear Weingarten surface in Euclidean space is a surface of revolution, hence parallel to a catenoid or a rotational surface of non-z…
dg-ga1997
On Guichard's nets and Cyclic systems
U. Hertrich-Jeromin, E. -H. Tjaden, M. T. Zuercher
In the first part, we give a self contained introduction to the theory of cyclic systems in n-dimensional space which can be considered as immersions into certain Grassmannians. We…