Operators and Matrices · Volume 12, Issue 3 On the weakly closed algebra generated by a unitary operator in a Pontryagin space 12-50 Pages 837-853 DOI 10.7153/oam-2018-12-50 Downloads Short PDF Full PDF PNG Authors Vladimir Strauss Keywords Pontryagin spaces unitary operators inverse operator weakly closed operator algebra Subject classes 46C20 47B50 47A60 47L75