University of Göttingen

Institute for Mathematics

Holger Kammeyer

office: 1.123 Lotzestr. 16-18
address: Mathematisches Institut
Bunsenstr. 3-5
37073 Göttingen, Germany
phone: +49 551 3914699
FAX: +49 551 392985
Holger Kammeyer

I am working in the DFG-project "L²-Invariants of Quantum Groups" with Thomas Schick. My mathematical interests lie in Lie algebras, algebraic topology, L²-invariants in differential geometry and mathematical finance. I defended my dissertation in April 2013. Starting from July 2013 I will be a postdoc at Bonn working with Wolfgang Lück.
Here are the slides of a talk introducing the famous "Göttinger Koffer" on the construction of the regular 65,537-gon for the first Night of Science in Göttingen (in German).


You can meet me at
  • Von Neumann Algebras and Measurable Group Theory
    July 2013, Leuven, Belgium
  • Summer School: Topology of high-dimensional manifolds
    August 2013, Bonn, Germany
  • Geometry, Groups and Topology
    October 2013, Karlsruhe, Germany
You could have met me at
  • Operator Algebra Seminar
    January 2013, Copenhagen, Denmark
  • Topology Seminar
    October 2012, Karlsruhe, Germany
  • Workshop "Topologie"
    September 2012, Oberwolfach, Germany.
  • Topology and Groups
    June 2012, Berlin, Germany,
  • Young Topologists Meeting
    June 2011, Lausanne, Switzerland,
  • Von Neumann algebras and ergodic theory of group actions
    April 2011, CIRM Marseille, France,
  • Symplectic and Poisson Geometry in interaction with Algebra, Analysis and Topology
    May 2010, MSRI Berkeley, California,
  • Eighth Annual Graduate Student Topology and Geometry Conference
    February 2010, Ann Arbor, Michigan,
  • First National Forum of Young Topologists
    November 2009, New Orleans, Louisiana,
  • Young Topologists Meeting
    May 2009, Le Châtelard, Switzerland.

Publications and Preprints

  • L²-invariants of nonuniform lattices in semisimple Lie groups
    dissertation, Göttingen University 2013, [eDiss]
  • Integral structures in real semisimple Lie algebras
    eprint 2012, [arXiv]
  • The Heston-Hull-White Model III: Design and Implementation (with Jörg Kienitz)
    Wilmott Magazine, Issue 59 (May 2012) 44-49, [article]
  • The Heston-Hull-White Model II: Numerics and Examples (with Jörg Kienitz)
    Wilmott Magazine, Issue 58 (March 2012), 34-45, [article]
  • The Heston-Hull-White Model I: Finance and Analytics (with Jörg Kienitz)
    Wilmott Magazine, Issue 57 (January 2012), 46-53, [article]
  • On Exotic Manifolds
    diploma thesis 2009, University of Göttingen, [pdf, dvi]


Oberseminar I was a TA for
  • Homotopy Theory (winter 2010/2011),
  • Measure and Probability Theory (summer 2008),
  • Calculus I (winter 2007/2008),
  • Calculus II (summer 2007).
Institute for Mathematics      Holger Kammeyer