Below are documents that I compiled for presentations in mathematics seminars during my time as a student. I also recommend material from Neeb's and matheraum.de.
|The Fenchel-Nielsen Coordinates of Teichmüller Spaces||fenchel-nielsen_...||260 kB|
|Quasilineare differentiell-algebraische Systeme||quasilinear_differ...||110 kB|
|Killing Fields in Negative Ricci Curvature||killing_fields_neg...||75 kB|
|Overview on elliptic curves||on_elliptic_curves...||205 kB|
|Brücken zwischen Aussagen- und Prädikatenlogik||aussagen_praedi...||110 kB|
|Decomposition of semi-algebraic sets||decomposition_...||150 kB|
|Linear Complementarity Problem||linear_complem...||120 kB|
|Kalman Filtering||kalman_filtering.pdf||71 kB|
|Amortized analysis of the Set-Union data structure||setunion/||browse|
|Kreuzworträtsel erschienen im OWO Heft 2003||kreuzwort_raetsel...||20 kB|
This paper contains much that is new and much
that is true. Unfortunately, that which is true
is not new and that which is new is not true.
At the HU-Berlin, I hosted a 2-day seminar on the basics of Mathematica. The created the following material for the course:
|Introduction to Mathematica *||mathematica_mat...||110 kB|
Over a period of several years, I have developed and maintained the following general purpose libraries. The algorithms and source code have been refined and put to the test with every project they were transfered over to.
|C++ library 2011 *||cpp8_2011-03.zip||80 kB|
|Java library 2015 **||java8_2015.zip||140 kB|
|X-files · Collection of useful MATLAB functions||xfiles.zip||20 kB|
A source code is a piece of art - cross check the characteristics inherent in the classical forms of art to those of the activity of designing a program: A coder has an individual sense for what is a beautiful program. A programmer delevelops his own coding style over time. His code reflects his way of thinking and is hard to communicate to others.
Silence is argument carried out by other means.
Ernesto "Che" Guevara
|List of audio books|
|BibHAK - An die Schüler der Taunusschule Königstein|
Experience matters for nothing
when they are making up the rules as they go along.
Here are links to personal websites of friends and colleagues. Others are referenced inside project descriptions.
|Friends and Colleagues|
|Josua Groeger differential geometry hard core|
|Ellen Hickman botanical artist|
|Michal Hoč tango|
|Annette Huck in den hopfenwiesen|
|Sabine Joseph tidal sphericity|
|Marcel Koch informatik und gestaltung|
|Kreidebergsee Bauträger GmbH|
|Artus Ph. Rosenbusch|
|Martin Sommer chansons|
|Albert Tay director, composer|
|Julian einfach investieren|
Everything in life is unusual
until you get accustomed to it.
The Marvelous Land of Oz
The following software and services have been useful to me in the past.
|Crimson Editor simply the best editor - by Ingyu Kang|
|Deutsch - English dictionary in text format|
|Icon Art vast icon collection - by Mark James|
|IZArc archiver (all formats) - by Ivan Zahariev|
|mimeTeX rendering of math expressions - by John Forkosh|
|Prezi next generation presentation|
|Coordinated Universal Time from the US Naval Observatory|
|VirtualDub video encoding|
|WinMerge compare files and folders|
|Xvid best video codec|
The creatures outside looked from pig to man,
and from man to pig,
and from pig to man again;
but already it was impossible to say which was which.