On cototality and the skip operator in the enumeration degrees
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DOI: 10.1090/tran/7604
Abstract: A set A ⊆ ω is cototal if it is enumeration reducible to its complement, A. The skip of A is the uniform upper bound of the complements of all sets enumeration reducible to A.… read more here.
Keywords: enumeration degrees; skip operator; cototality; enumeration ... See more keywords