a College of Science, Huzhou University, Huzhou 313000, PR China b College of Science, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
Abstract:
The authors prove a conjecture on elliptic integrals and obtain sharp bounds for φK(r) and λ(K). By using Teichmüller's module theorem, the authors obtain a distortion theorem of K-quasiconformal mappings on the plane.