My question is: what are the minimal conditions on a topological space for it have the following property?
$$x\in \bar{A}\iff \exists (x_n)\subset A | x_n \to x$$
My question is: what are the minimal conditions on a topological space for it have the following property?
$$x\in \bar{A}\iff \exists (x_n)\subset A | x_n \to x$$