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Minimal generalized computable enumerations and high degrees© 2017, Pleiades Publishing, Ltd. We establish that the set of minimal generalized computable

Minimal generalized computable enumerations and high degrees© 2017, Pleiades Publishing, Ltd. We establish that the set of minimal generalized computable

Q-reducibility and m-reducibility on computably enumerable sets-reducibility on computably enumerable sets. We construct a noncomputable m-incomplete computably enumerable set B

Isolated 2-computably enumerable Q-degrees properly 2-computably enumerable degree d such that a
Isolated 2-computably enumerable Q-degrees properly 2-computably enumerable degree d such that a
Q-reducibility and m-reducibility on computably enumerable sets-reducibility on computably enumerable sets. We construct a noncomputable m-incomplete computably enumerable set B

Strong noncuppability in low computably enumerable degreesWe prove the existence of noncomputable low computably enumerable degrees b < a such that b

Almost computably enumerable families of sets. Moreover, it is established that for any computably enumerable (c.e.) set A there exists afamily that is X

Turing and enumeration jumps in the Ershov hierarchyIn the article, we study the behaviour of enumeration jumps of sets of low e-degrees in the Ershov

Strong noncuppability in low computably enumerable degreesWe prove the existence of noncomputable low computably enumerable degrees b < a such that b

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