Polygons with prescribed Gauss map in Hadamard spaces and Euclidean
Mathematical Bulletin, 2006, Voume 49(3), pp. 321-336, Arxiv:
In this article, we classify the conditions under which configurations
on its boundary yield a polygon in the building X. For Hadamard spaces,
sufficient conditions are given.
Towards a Classification of CMC-1 Trinoids in hyperbolic space via
Kobe Journal of Mathematics, 2006, Volume 23, pp. 51-63;
This paper merges the results
Daniel and my diploma thesis, and discusses to which extent
one can use conjugate minimal surfaces for a classification of CMC-1
trinoids in hyperbolic space.
PhD thesis "On the interplay between the Tits boundary and the
interior of Hadamard spaces"diss.pdf
My thesis comprises "Convex rank 1 subsets ...", "Polygons ...", and
some results on convex rank 1
subsets of SL(3)/SO(3).
Summer School on Commutative Formal Groups (Sept. 03)
Together with Kristian Bruening and Fridolin Roth, I presented
connections between formal group theory and topology. My talk covered
BP-Homology. The handout also contains a
Landweber's classification of cohomology operations on MU, which I
didn't present in the talk.
The handout is in German.
Kristian Bruening wrote a handout about his introductory talk,
too. The talk covered (among other topics) generalised homology theories,
spectra, and how
one obtains a formal group law from a generalised homology theory.
If you are interested in the handout, feel free to contact him under
"kbruenin AT mathematik . uni - bielefeld . de".
Seminar: "Ausgewählte Kapitel der Gruppen- und
Darstellungstheorie" (Prof. Neeb, TU Darmstadt, WS 01/02, in
German and in the order in which the talks were given; not all given
talks are listed)
Primzahlnachweis mit Hilfe elliptischer
Handout for a talk in a seminar on elliptic curves: This talk was
about ECPP (the
primality proving algorithm that uses elliptic curves); includes some
material on pseudoprime-tests. (In german) (2000)