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  1. Degrees containing members of thin Π10 classes are dense and co-dense.Rodney G. Downey, Guohua Wu & Yue Yang - 2018 - Journal of Mathematical Logic 18 (1):1850001.
    In [Countable thin [Formula: see text] classes, Ann. Pure Appl. Logic 59 79–139], Cenzer, Downey, Jockusch and Shore proved the density of degrees containing members of countable thin [Formula: see text] classes. In the same paper, Cenzer et al. also proved the existence of degrees containing no members of thin [Formula: see text] classes. We will prove in this paper that the c.e. degrees containing no members of thin [Formula: see text] classes are dense in the c.e. degrees. We will (...)
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