7

Questions
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9
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2
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401
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Borel sets preserved under open maps?

sep 11 at 21:58 Gerald Edgar 15.2k●1●28●67

 
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147
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Cohesive sets with degree below some non-high 1-generic degrees?

apr 4 at 16:52 Zhang Jing 309●1●1●6

 
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173
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Non-standard model of the domination principle

may 18 at 10:22 Zhang Jing 309●1●1●6

 
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195
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Proof of the existence of hyperimmune-free degrees

jan 12 at 9:12 Peter Gerdes 181●2

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$\Sigma_1^0-COH$?

feb 16 at 22:01 François G. Dorais♦ 22.4k●2●48●113

 
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Indices of r.e. sets

mar 17 at 12:14 Zhang Jing 309●1●1●6

 
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Absoluteness of Countability

jun 23 at 16:23 Zhang Jing 309●1●1●6