This book intends to lead to some of the current topics of research in
the geometry of polyhedral surfaces with applications to computer graphics.
The main feature of the book is a systematic introduction to geometry of polyhedral surfaces
based on the variational principle. The authors focus on using analytic methods in the
study of some of the fundamental results and problems on polyhedral geometry, e.g., the Cauchy rigidity theorem,
Thurston's circle packing theorem, rigidity of circle packing theorem and Colin de Verdiere's
variational principle. With the vast development of the mathematics subject of polyhedral
geometry, the present book is the first complete treatment of the subject.