Isometries between C*-algebras

Cho-Ho Chu, Ngai-Ching Wong
2004 Revista matemática iberoamericana  
Let A and B be C*-algebras and let T be a linear isometry from A into B. We show that there is a largest projection p in B
doi:10.4171/rmi/381 fatcat:vsa7pzeuevhivmgtvxaowcrojq