new Kegel

Marc Kegel

Welcome to my webpage. Since August 2018 I am a BMS Substitute Professor in the working group of Prof. Chris Wendl at the Humboldt University Berlin.

From September 2014 till July 2018 I was a member of the working group of Prof. Hansjörg Geiges at the Universiy of Cologne where I graduated in January 2017 about "Legendrian knots in surgery diagrams and the knot complement problem".

The fields of my research include low-dimensional topology, contact geometry and symplectic geometry. Mainly I am interested in contact 3-manifolds, Dehn surgery constructions, open book decompositions and Legendrian- and transverse knot theory.


Mailing address:
Institut für Mathematik
Humboldt-Universität zu Berlin
Unter den Linden 6
10099 Berlin

Rudower Chaussee 25 (Johann von Neumann-Haus)
12489 Berlin
Room : 318, Haus 1
Telephon : +49-30-2093-1818
E-Mails :

Office Hours: by appointment
Lunch: daily at 11:30


My complete CV can be accessed here.


Publications and Preprints

new Kegel

Teaching WS 2018/2019

Seminar zur Differentialtopologie.

Former Teaching (at the University of Cologne)


Connect Four on the Klein bottle (Vier gewinnt auf der Kleinschen Flasche)

Computing the classical invariants, in preparation


Learning Seminar: Computational Topology, WS 2017/18, University of Cologne

The stabilisation height of fibre surfaces, Lecture series by Filip Misev, 19 Oct - 20 Oct 2017, University of Cologne

Morse Structures on Open Books, Lecture series by Joan Licata, 17 May - 19 May 2017, University of Cologne


You can also find me on:

Google Scholar


Front for the arXiv




Mathematics Genealogy Project