Prefer a chat interface with context about you and your work?
On a conjecture of L. B. Page
If J3?~ is an Hubert space and ^s^f a subspace which is invariant under a unilateral shift & on 3ίΓ one can ask when a bounded operator T on ^ which commutes with S can be extended to a bounded operator on all of 3ίΓ which also commutes with S.Here …