Search Results - "Cooper, S.Barry"
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Non-Uniformity and Generalised Sacks Splitting
Published in Acta mathematica Sinica. English series (01-04-2002)“…<正> We show that there do not exist computable fimetions f1（e,i）.f2（e,i）.g1（e,i）,g2（e,i）suchthat for all e,i…”
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Journal Article -
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Cupping and noncupping in the enumeration degrees of ∑ 20 sets
Published in Annals of pure and applied logic (01-12-1996)“…We prove the following three theorems on the enumeration degrees of ∑ 2 0 sets. Theorem A: There exists a nonzero noncuppable ∑ 2 0 enumeration degree. Theorem…”
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Journal Article