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Normal Numbers and the Borel Hierarchy

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 نشر من قبل Ver\\'onica Becher
 تاريخ النشر 2013
  مجال البحث الهندسة المعلوماتية
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We show that the set of absolutely normal numbers is $mathbf Pi^0_3$-complete in the Borel hierarchy of subsets of real numbers. Similarly, the set of absolutely normal numbers is $Pi^0_3$-complete in the effective Borel hierarchy.



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