Marc Christian Zimmermann

Who I am: I am a mathematician interested in problems in discrete geometry and the theory of quadratic forms, with emphasis on spectral methods for chromatic numbers and packing problems, as well as geometric and algebraic aspects of (integral) lattices. Currently I am a postdoctoral researcher in the group of Frank Vallentin at the Universität zu Köln.

I obtained my doctorate degree form the Technische Universität Dortmund with Rudolf Scharlau as my advisor.

What I do: You may find further information regarding my research interests, my written works and my experience in teaching following the links below:

• Written works
• Scripts and computational data
• Research interests
• Teaching

How to contact me:

• Office: Weyertal 80, 2.Etage bei Prof. Dr. Frank Vallentin
• Phone:
• Visiting hours: Nach Vereinbarung.
• Email: Marc.Christian.Zimmermann@gmail.com

Short overview of my research interests:

• Spectral bounds in discrete geometry
• Chromatic numbers of symmetric spaces
• Euclidean lattices and their suitability for the sphere packing, covering and quantizer problem
• Hermitian lattices over totally imaginary quadratic extensions of totally real number fields
• Similarities of Euclidean lattices (and their connection to algebraic structures that lattice is defined over)
• Applications of Euclidean lattices to coding theory

Workshops and Conferences I attended (or am going to attend):

• Algorithms for lattices and algebraic automorphic forms (May 6 to May 10, 2013, American Institute of Mathematics, Palo Alto, CA, supported by the NSF)
• Zürich Seminar on Communications (Feb 26 to Feb 28, 2014,  Zürich)
• ICM 2014 Satellite Conference(#8) on Integral Quadratic Forms and Related Topics (Aug 7 to Aug 11, 2014, Gyeongju, South Korea)
• Workshop on “Sphere Packings, Lattices, and Designs” (Oct 27 to Oct 31, 2014, Erwin Schrödinger International Institute for Mathematical Physics, Vienna, Austria)
• Lattices and Applications in Number Theory (Jan 17 to Jan 23, 2016, Mathematisches Forschungsinstitut Oberwolfach, Oberwolfach, Germany)
• Workshop on Aperiodic Order: Enumeration Problems, Dynamics, and Topology (May 24 to May 27, Universität Bielefeld, Bielefeld, Germany)
• Computation and Optimization of Energy, Packing, and Covering (Apr 9 to Apr 13, 2018, ICERM, Brown University, Providence, RI)