the National Natural Science Foundation of China (No. 10771049; 10771050); the Natural Science Foundation of Hebei Province (No. A2007000225) and the Foundation of Hebei Normal University (No. L2007Q05); the 11th Five-Year Plan Educational and Scientific Issues of Hebei Province (No. O8020147).
In the first part of this paper, we discuss the Holder continuity of the cauchy integral operator for regular functions and the relation between ‖T{f}‖α and ‖f‖α. In the second part of this paper, we introduce t...