I am reading about Banach lattice space and confuse a little bit about two concepts "bounded" and "norm bounded set". Could you please help me to declare them?
More precisely, let $E$ be a Banach lattice space with the order $\le$. Let $\left \| . \right \|$ be the norm on $E$.
A subset $A$ of $E$ is said to be order bounded if there exist $x, y \in E$ such that $x \le a \le y$ holds for each $a\in A$.
Besides, a subset $A$ of $E$ is said to be a norm bounded set if there exists a non-negative number $M$ such that $\left \| x \right \| \le M$, for every $x \in A$.
Then, what is the relationship between "order bounded set" and "norm bounded set"?
Could you please give me a counter example for more detail?
Thank you for your time and consideration.