$\textbf{$T_0$ space / Kolmogorov space}$
A topological space $X$ is called a $T_0$ space or Kolmogorov space if for any two points $x\neq y$ there is an open set containing one of them but not the other.
$\textbf{$T_0$ space / Kolmogorov space}$
A topological space $X$ is called a $T_0$ space or Kolmogorov space if for any two points $x\neq y$ there is an open set containing one of them but not the other.
copied
𝐓₀ 𝐬𝐩𝐚𝐜𝐞 / 𝐊𝐨𝐥𝐦𝐨𝐠𝐨𝐫𝐨𝐯 𝐬𝐩𝐚𝐜𝐞
A topological space 𝑋 is called a 𝑇₀ space or Kolmogorov space if for any two points 𝑥≠𝑦 there is an open set containing one of them but not the other.