University of Göttingen

Institute for Mathematics

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).

Events

• 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

• 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]

Teaching

• Lattices in Semisimple Lie Groups (with Jean-François Planchat, winter 2011/2012).

• Homotopy Theory (winter 2010/2011),
• Measure and Probability Theory (summer 2008),
• Calculus I (winter 2007/2008),
• Calculus II (summer 2007).