An asymmetric Putnam-Fuglede theorem for unbounded operators
Authors:
Jan Stochel
Affiliation:
Instytut Matematyki, Uniwersytet Jagiellonski, Kraków, Poland
Abstract:
The intertwining relations between cosubnormal and closed hyponormal (resp. cohyponormal and closed subnormal) operators are studied. In particular, an asymmetric Putnam-Fuglede theorem for unbounded operators is proved.