Abstract
We show that every nonzero Δ⁰₂ e-degree bounds a minimal pair. On the other hand, there exist Σ⁰₂ e-degrees which bound no minimal pair.
Citation
S. Barry Cooper. Angsheng Li. Andrea Sorbi. Yue Yang. "Bounding and nonbounding minimal pairs in the enumeration degrees." J. Symbolic Logic 70 (3) 741 - 766, September 2005. https://doi.org/10.2178/jsl/1122038912
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