Intersection of Two Invariant Subspaces
Intersection of Two Invariant Subspaces
Abstract It is shown that, if F and G are inner functions, ( H 2 ⊖ FH 2 )/( H 2 ⊖ FH 2 ) ∩ GH 2 is n -dimensional if and only if G is a Blaschke product of degree n . This is an extension of the …