Operators and Matrices · Volume 7, Issue 3 Block representations for classes of isometric operators between Kreĭn spaces 07-36 Pages 651-685 DOI 10.7153/oam-07-36 Downloads Short PDF Full PDF PNG Authors Rudi Wietsma Keywords Isometric and unitary relations block representations Weyl function extension theory Subject classes 47A06 47B25 47B50 47A56