Theorem: If a normed space $X$ is finite dimensional then every linear operator on $X$ is bounded.
I have a proof to this. I was thinking about the converse "If every linear operator on normed space $X$ is bounded then $X$ is finite dimensional."
My question is: "Is the converse true?" My guess is NO. But I am not getting a counter example.
Best Answer
What you are looking for is whether or not the following holds:
Let us attempt a proof.
Now let us generalise this.