@article{oai:u-ryukyu.repo.nii.ac.jp:02010320,
 author = {Sudo, Takahiro},
 journal = {Ryukyu mathematical journal},
 month = {Dec},
 note = {ln this paper we review, rebuild, and study the theory of the set of all extremal points of the unit ball of a C^*-algebra, consisting of partial isometries with a certain condition, and also the theory of extremally rich C^*-algebras, and moreover, the theory of the λ-function in operator algebras, as well., 紀要論文},
 pages = {19--116},
 title = {The theory of C^∗-algebra unit ball extreme points, extremally rich C^∗-algebras, and the λ-function : a review},
 volume = {23},
 year = {2010}
}