- #1
yifli
- 70
- 0
In a book I'm reading, it says:
If beta is orthogonal to the set A, then beta is orthogonal to the closure of the linear span of A
It's easy to see beta is orthogonal to the linear span of A, but I don't understand why it has to mention closure here?
If beta is orthogonal to the set A, then beta is orthogonal to the closure of the linear span of A
It's easy to see beta is orthogonal to the linear span of A, but I don't understand why it has to mention closure here?