@article{oai:ynu.repo.nii.ac.jp:00006724, author = {Izuchi, Keiji and Izuchi, Yuko}, issue = {1&2}, journal = {Yokohama Mathematical Journal = 横濱市立大學紀要. D部門, 数学}, month = {}, note = {application/pdf, For a Douglas algebra B, we study extreme and exposed points of the unit ball of B/H^{infty} or B/H^{infty}+C . Characterizations of extreme and exposed points in B/H^{infty} are given. And we give conditions on B that the unit ball of B/H^{infty}+C has extreme points or no extreme points.}, pages = {45--54}, title = {EXTREME AND EXPOSED POINTS IN QUOTIENTS OF DOUGLAS ALGEBRAS BY H^{infty} OR H^{infty}+C}, volume = {32}, year = {1984} }