The Hypoellipticity for a Class of Nonhomogeneous Convolution Operator on the Nilpotent Lie Group H<sub>n</sub>×R<sup>k</sup>

郑驻军

The Hypoellipticity for a Class of Nonhomogeneous Convolution Operator on the Nilpotent Lie Group H_n×R^k

Zheng Zhujun

数学季刊 . 1993, (3): 76 -81 .