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Bounding and nonbounding minimal pairs in the enumeration degrees [期刊论文]
Journal of Symbolic Logic, 2005-01-01, 卷号: 70, 期号: 3, 页码: 741-766
Cooper SB; Li AS; Sorbi A; Yang Ye
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Plus cupping degrees do not form an ideal [期刊论文]
Science in China Series F-information Sciences, 2004-01-01, 卷号: 47, 期号: 5, 页码: 635-654
Li Angsheng; Zhao YC
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A join theorem for the computably enumerable degrees [期刊论文]
Transactions of the American Mathematical Society, 2004-01-01, 卷号: 356, 期号: 7, 页码: 2557-2568
Jockusch CG; Li AS; Yang Ye
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There exists a maximal 3-c.e. enumeration degree [期刊论文]
Israel Journal of Mathematics, 2003-01-01, 卷号: 137, 期号: *, 页码: 285-320
Cooper SB; Li AS; Sorbi A; Yang Ye
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A minimal pair joining to a plus cupping Turing degree [期刊论文]
Mathematical Logic Quarterly, 2003-01-01, 卷号: 49, 期号: 6, 页码: 553-566
Li DF; Li Angsheng
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Non-uniformity and generalised sacks splitting [期刊论文]
Acta Mathematica Sinica-english Series, 2002-01-01, 卷号: 18, 期号: 2, 页码: 327-334
Cooper SB; Li Angsheng
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On the distribution of Lachlan nonsplitting bases [期刊论文]
Archive For Mathematical Logic, 2002-01-01, 卷号: 41, 期号: 5, 页码: 455-482
Cooper SB; Li Angsheng; Yi XD
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Splitting and cone avoidance in the DCE degrees [期刊论文]
Science in China Series A-mathematics Physics Astronomy, 2002-01-01, 卷号: 45, 期号: 9, 页码: 1135-1146
Cooper SB; Li Angsheng
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Splitting and nonsplitting; II: A low(2) C.E. degree above which 0 ' is not splittable [期刊论文]
Journal of Symbolic Logic, 2002-01-01, 卷号: 67, 期号: 4, 页码: 1391-1430
Cooper SB; Li Angsheng
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There is no low maximal d. c. e. degree [期刊论文]
Mathematical Logic Quarterly, 2000-01-01, 卷号: 46, 期号: 3, 页码: 409-416
Arslanov M; Cooper SB; Li Angsheng
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