Use the arcs and points of the noncompact counterexample to the Šura-Bura lemma, and add the central ray to form . Define . Each graph tail is connected because its arcs meet the ray. Its relative closure in adds just , so each is closed and connected. These sets decrease and have intersection , which is compact and disconnected. The ambient is connected and Hausdorff but noncompact.
Articles by others on the same topic
There are currently no matching articles.