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7:15 AM
A new tag was cretaed.
1
Q: Generality of construction for $\omega$-REA arithmetic degrees

Peter GerdesSo 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_...

52
Q: Nontrivial question about Fibonacci numbers?

DonaldI'm looking for a nontrivial, but not super difficult question concerning Fibonacci numbers. It should be at a level suitable for an undergraduate course. Here is a (not so good) example of the sort of thing I am looking for. a) Prove that every positive integer can be represented in binary o...

 
 
15 hours later…
10:13 PM
@MartinSleziak The tag 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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