拟交比同胚的偏差估计

Distortion Estimates for Quasihommographies

研究单位圆周上拟交比同胚的一些偏差估计 ,并对拟交比同胚作为 ρ-拟对称函数中的 ρ的上界给出估计 ,其结果改进了近期由

Some distortion estimates of qusihommographies on unit circle are studied.Estimate is also given to the upper bound of ρ for quasihommographies to be regarded as ρ quasisymmetric function. These results improve the corresponding results obtained by Zajac recently.