It is shown that Th(H1) ≠ Th(Hn) holds for every n > 1, where Hm is the upper semi-lattice of all highm computably enumerable (ce.) degrees for m > 0, giving a first elementary difference among the highness hierarchies of the ce. degrees. © Springer-Verlag Berlin Heidelberg 2007.
CITATION STYLE
Angsheng, L. (2007). Elementary differences among jump hierarchies. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 4484 LNCS, pp. 79–88). https://doi.org/10.1007/978-3-540-72504-6_7
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