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Workgroup on Number Theory and Algebraic Geometry

Kollegiengebäude Mathematik (20.30)
Room 1.027

Kaiserstraße 89-93
76133 Karlsruhe

Office hours:
Mo - Fr, 9.15 - 11.45

Tel.: +49 721 608 43041

Fax.: +49 721 608 44244

JProf. Dr. Gabriela Weitze-Schmithüsen

Office hour for students: no office hours in this semester
Room: 1.033 Kollegiengebäude Mathematik (20.30)
Tel.: +49 721 608 43700
Fax.: 0721 608 44244
Email: weitze-schmithuesen@kit.edu

Institut für Algebra und Geometrie
Kaiserstraße 89-93
76133 Karlsruhe


There will be no office hours in summer semester 2015. If you have questions, please contact Ute Hoffmann or send me an email.


15.12.2015 - 17.12.2015

Semester Titel Typ
Winter Semester 2015/16 Seminar
Summer Semester 2015 Seminar
Winter Semester 2014/15
Summer Semester 2014
Winter Semester 2013/14 Seminar
Summer Semester 2013 Seminar
Winter Semester 2012/13
Summer Semester 2012
Winter Semester 2011/12 Seminar
Summer Semester 2011
Winter Semester 2010/11
Summer Semester 2010 Seminar
Winter Semester 2009/10
Summer Semester 2009


My fields of interest are Veech groups of translation surfaces and Teichmüller curves in moduli spaces. I have particularly worked on special cases that arise from coverings of elliptic curves that are ramified over at most one point, called square tiled surfaces or origamis.
This work lead me to the study of subgroups of mapping class groups, of subgroups of the automorphism group Aut(F_n), Out(F_n) and GL(n,Z) and the Culler-Vogtmann outer space. I am especially interested in relations between Teichmüller spaces and outer spaces.

Since summer 2007: Research project With origamis to Teichmüller curves in moduli space. More informations about our research on origamis in Karlsruhe can be found here: Origamis in Karlsruhe

Since Summer 2009: Research project Culler and Vogtmann's outer space and Out(F_n) - geometric and algorithmic approaches (within the program RiSC by the KIT and the State of Baden-Württemberg)



Teaching in former terms

Winter 2008/2009Seminar Homological algebra
Summer 2008Seminar The Veech alternative for billiard tables
Winter 2007/08Geometric group theory
Proseminar "Nice groups of Matrices"
Summer 2006 Seminar "Automatic groups"
Summer 2005 Seminar "Hodge-Theory"
Winter 2004/05 Seminar "Tertium datur: Thurston's classification of surface diffeomorphisms"
Summer 2003 Seminar "Moduli spaces of algebraic curves"
Winter 2002/03 Exercise Sections for Algebra I
Seminar "Fuchsian groups"
Summer 2002Proseminar "Geometry and Combinatorics"
Winter 2001/02 Proseminar "Knot-Theory"

Supplementary mathematical activites

Summer semester 2015

In summer 2015 I was at the University of Bonn.
Please find here my homepage at the Mathematical Institute of the University of Bonn.
Here are some first information for the seminar on translation surfaces in the summer semester.