Type: Article
Publication Date: 2010-01-19
Citations: 7
DOI: https://doi.org/10.1017/s144678870900038x
Abstract We formulate and prove two versions of Miyachi’s theorem for connected, simply connected nilpotent Lie groups. This allows us to prove the sharpness of the constant 1/4 in the theorems of Hardy and of Cowling and Price for any nilpotent Lie group. These theorems are proved using a variant of Miyachi’s theorem for the group Fourier transform.