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Bounding cappable degrees |
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| Authors: | Angsheng Li |
| Institution: | (1) Institute of Software, Academia Sinica, P.O. Box 8718, Beijing, China (e-mail: liang@ox.ios.ac.cn) , CN |
| Abstract: | It will be shown that there exist computably enumerable degrees a and b such that a b, and for any computably enumerable degree u, if u a and u is cappable, then u b. Received: 22 April 1997 |
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