- #1
logarithmic
- 107
- 0
Suppose that H, K are Hilbert spaces, and A : H -> K is a bounded linear operator and an isomorphism.
If X is a dense set in H, then is A(X) a dense set in K?
Any references to texts would also be helpful.
If X is a dense set in H, then is A(X) a dense set in K?
Any references to texts would also be helpful.