• Discrete Differential Geometry 

      [OWS-38] Bobenko, Alexander I.; Schröder, Peter; Sullivan, John M.; Ziegler, Günter M. (Birkhäuser Basel, 2008)
      Discrete differential geometry is an active mathematical terrain where differential geometry and discrete geometry meet and interact. It provides discrete equivalents of the geometric notions and methods of differential ...
    • Polytopes - combinatorics and computation 

      [OWS-29] Kalai, Gil; Ziegler, Günter M. (Birkhäuser Basel, 2000)
      Questions that arose from linear programming and combinatorial optimization have been a driving force for modern polytope theory, such as the diameter questions motivated by the desire to understand the complexity of the ...