Question

What is an open set?

Answer 1

An open set, is when we consider a finite amount of real numbers but we don't consider the maximun and the minimum numbers.

Answer 2

so R is an open set?

Answer 3

topology speaking

Answer 4

\(\color{blue}{\text{Originally Posted by}}\) @Owlcoffee
An open set, is when we consider a finite amount of real numbers but we don't consider the maximun and the minimum numbers.
\(\color{blue}{\text{End of Quote}}\)
Finite? Somehow I highly doubt this.

Answer 5

\(\mathbb R\) is a an open set, since there is no maximum or minimum.