In my talk I want to tell about recently achieved(2011)by I.Kossovsky and myself complete local classification of 4-dimensional CR-manifolds,which represent
Objective To investigate the early debridement and external fixation efficacy of fixation of tibia and fibula second period Gustilo Ⅲ type of open fracture
Given a circle packing on the Riemann sphere,we prove that its quasiconformal deformation space can be naturally identified with the product of the Teichmul