K=\bigcap_{n=1}^{\infty}O_n\quad (K\ {\rm is\ compact,\ }O_n\ {\rm is\ open.})
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Recent Referers:
  1. http://formula.s21g.com/?K%3D%5Cbigcap_%7Bn%3D1%7D%5E%7B%...
  2. https://mkprob.hatenablog.com/?page=1347199435
  3. https://mkprob.hatenablog.com/entry/20120831/1346379231
  4. https://mkprob.hatenablog.com/archive/2012/08/31
  5. https://formula.s21g.com/?K%3D%5Cbigcap_%7Bn%3D1%7D%5E%7B...