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There is no low maximal d. c. e. degree - CorrigendumWe give a corrected proof of an extension of the Robinson Splitting Theorem for the d. c. e

There is no low maximal d. c. e. degreeWe show that for any computably enumerable (c. e.) set A and any Δ0 2 set L, if L is low and L
There is no low maximal d. c. e. degreeWe show that for any computably enumerable (c. e.) set A and any Δ0 2 set L, if L is low and L
On a problem of IshmukhametovGiven a d.c.e. degree d, consider the d.c.e. sets in d and the corresponding degrees

On a problem of IshmukhametovGiven a d.c.e. degree d, consider the d.c.e. sets in d and the corresponding degrees

There is no low maximal d. c. e. degree - CorrigendumWe give a corrected proof of an extension of the Robinson Splitting Theorem for the d. c. e

Definable relations in Turing degree structuresIn this article, we investigate questions about the definability of classes of n-c. e. sets

Definable relations in Turing degree structuresIn this article, we investigate questions about the definability of classes of n-c. e. sets

Nondensity of double bubbles in the D.C.E. degrees bubbles” are not downward dense in the d.c.e. degrees. Here, a pair of d.c.e. degrees d1 > d2 > 0 forms a

Downward density of exact degrees© 2015, Pleiades Publishing, Ltd. In this paper we study exact d.c.e. degrees, the class of d.c.e

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