7:15 AM
1
So a common method used to construct non-zero $\omega$-REA arithmetic degrees with various properties is to build an $\omega$-REA operator $J$ satisfying the constraints that (for all $X$) $$\tag{1} J(X') \equiv_T J(X) \oplus X'$$ $$\tag{2} J(X) >_T X$$ Inductively, 1 implies that $J(X^n) \equiv_...
15 hours later…
10:13 PM
@MartinSleziak The tag rea also has a tag-excerpt: "Used for questions about REA (aka CEA) sets in computability theory where REA stands for recursively enumerable and above."
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