Research Interest

• Heat kernel estimates for elliptic operators (degenerated with unbounded pertubations).
• Existence and uniqueness of solutions for non-autonomous variational problems.

Publications

• Gaussian Estimates for Second Order Operators with Unbounded Coefficients, Ulmer Seminare 1999, p. 304-325. Accepted for publication in `Journal of Mathematical Analysis and Applications' as of 2001/03/06. Online avaiable:

  DVI format:

  uncompressed (130k), gzip-compressed ( 50k), bzip2-compressed ( 46k).

  PostScript® format:

  uncompressed (374k), gzip-compressed (142k), bzip2-compressed (122k).

• Das asymptotische Verhalten stark-stetiger Halbgruppen auf Banachräumen (The asymptotic Behaviour of strongly-continuous Semigroups on Banach Spaces), diploma thesis at the department of Mathematics of the University of Münster, Mai 5th 1997; with Tutor Prof. Gunter Bengel.

Tips

• Some Tips and Tricks for TeX (in German).

Historicals

Other Interest

• Cryptography. I have written a small program sharesecret, which splits a secret into to parts given a threshold k, such that at least k of the parts are needed to reconstruct the secret.
• Dancing at DTV (Deutscher Tanzsportverband e.V.) competitions, the TSA (Tanzsportabteilung) (see also its own page) of the TSV Neu-Ulm 1880, the TSA (Tanzsportabteilung) of the SSV Ulm 1846 and at the sport group (Hochschulsport) of the university.
• Using Debian GNU/Linux and Debian GNU/Hurd.
• Admin (partly) the computers of our department.

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Copyright © 1999-2002 Stefan Karrmann. Last Updated: 2002-03-08.

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