(S,\mathcal{S})
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Recent Referers:
  1. http://formula.s21g.com/?(S,%5Cmathcal%7BS%7D)
  2. http://formula.s21g.com/
  3. http://d.hatena.ne.jp/mkprob/touch/searchdiary?word=*%5B%...
  4. http://mkprob.hatenablog.com/?page=1337244082
  5. http://www.google.co.jp/