Hawaiian earring

one-point compactification of a countably infinite family of open intervals

en-GB/hɑːwaɪɪən ˈɪəɹɪŋ/
en-US/həˈwaɪən ˈiɹˌɹɪŋ/

دسته بندی ها:

Hausdorff spacepath-connected spacecompact spacecompletely metrizable space