Short question about arbitrary epsilon

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Hello all I am just wondering if my thoughts on this are correct.

Suppose we are just talking about some bounded set $$A \subseteq \mathbb{R}$$

we say $w$ is a sup of A iff it is an upper bound of A and $\forall \epsilon \gt 0$ there $\exists$ an $a_{\epsilon} \in A$ such that $$w-\epsilon \lt a_{\epsilon}$$

Then could we also say the same but instead using $\frac{\epsilon}{2}$

ie it is the supremum iff it is an upper bound and $\forall \frac{\epsilon}{2} \gt 0$ there $\exists$ an $a_{\frac{\epsilon}{2}}$ $\in A$ such that $$w-\frac{\epsilon}{2} \lt a_{\frac{\epsilon}{2}}$$