@article{oai:u-ryukyu.repo.nii.ac.jp:02007101, author = {Sudo, Takahiro and 須藤, 隆洋}, journal = {Ryukyu mathematical journal}, month = {Dec}, note = {This paper is devoted to the case by case study on structure of group C*-algebras of the Lie semi-direct products of the 1-dimensional real or complex Lie groups by connected Lie groups, in particular, by commutative Lie groups or the generalized Heisenberg Lie groups. As corollaries, we determine existence and nonexistence of projections of these special group C*-algebras in terms of groups, and obtain some generalized results for more general C* -algebras by another methods., 紀要論文}, pages = {69--85}, title = {STRUCTURE OF GROUP C*-ALGEBRAS OF LIE SEMI-DIRECT PRODUCTS OF $ {\Bbb R} $ OR $ {\Bbb C} $ BY LIE GROUPS}, volume = {12}, year = {1999} }