摘要
It has been proved by the author that every p-generic degree is nonbranching.In this paper we construct an r.e.degree which is strongly nonbranching and non-p-generic.It means that the class of nonbranching degrees does not coincide with the class of p-generic degrees.
It has been proved by the author that every p-generic degree is nonbranching.In this paper we construct an r.e.degree which is strongly nonbranching and non-p-generic.It means that the class of nonbranching degrees does not coincide with the class of p-generic degrees.
基金
Supported by a grant of the Stiftung Volkswagenwerk
National Science Foundation of China.
