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Nondensity of double bubbles in the D.C.E. degrees

Andrews U., Kuyper R., Lempp S., Soskova M., Yamaleev M.

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

On Fairly Low and Superlow Sets

well-known low sets and superlow sets called fairly low sets. We prove a slightly more substantial fact

A Set of Actions on Economic Concentration

Егорова М. А.

A Set of Actions on Economic Concentration

Downward density of exact degrees

Liu J., Wu G., Yamaleev M.

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

Nonexistence of minimal pairs in L[d]

Fang C., Liu J., Wu G., Yamaleev M.

© Springer International Publishing Switzerland 2015. For a d.c.e. set D with a d.c.e

Structural properties of Q-degrees of n-c. e. sets

Arslanov M., Batyrshin I., Omanadze R.

In this paper we study structural properties of n-c. e. Q-degrees. Two theorems contain results

Nonexistence of minimal pairs in L[d]

Fang C., Liu J., Wu G., Yamaleev M.

© Springer International Publishing Switzerland 2015. For a d.c.e. set D with a d.c.e

Limitwise monotonic reducibility on sets and on pairs of sets

© 2016, Allerton Press, Inc.We study limitwise monotonic sets and pairs of sets. We investigate

Logic of proofs and labels with a complete set of operations

Яворская Т. Л.

Logic of proofs and labels with a complete set of operations

There are no maximal d.c.e. wtt-degrees

Yamaleev Mars Mansurovich, Vu Gohua

There are no maximal d.c.e. wtt-degrees

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