Definition:Fort Space/Countable

Definition
Let $S$ be an infinite set.

Let $p \in S$ be a particular point of $S$.

Let $T = \struct {S, \tau_p}$ be a Fort space.

Let $S$ be countably infinite.

Then $\tau_p$ is a countable Fort topology, and $\struct {S, \tau_p}$ is a countable Fort space.

Also see

 * Fort Topology is Topology


 * Definition:Uncountable Fort Space


 * Definition:Modified Fort Space
 * Definition:Fortissimo Space