2 papers
math.CV1999
Rigidity of infinite disk patterns
Zheng-Xu He
Let P be a locally finite disk pattern on the complex plane C whose combinatorics are described by the one-skeleton G of a triangulation of the open topological disk and whose dihe…
math.GT1993
Möbius invariance of knot energy
Steve Bryson, Michael H. Freedman, Zheng-Xu He +1
A physically natural potential energy for simple closed curves in is shown to be invariant under Möbius transformations. This leads to the rapid resolution of several o…