Certain topological spaces have their own name. Topologist's sine curve, Hawaiian earring, the long line, the line with two origins and so on. Does the subspace $\{1/n \ \vert \ n\in \mathbb{N}\}\cup \{0\}\subseteq [0,1]$ have such a name?
2026-04-07 06:30:38.1775543438
Name of a certain topological space
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https://topology.pi-base.org/spaces/S000020
I usually just call it the "converging sequence", but in Steen/Seebach's Counterexamples they called it the "Countable Fort Space".