V. I. Arnautov

Vladimir Andrunachievici Institute of Mathematics

and Computer Science

5 Academiei str., MD-2028, Chisinau

Moldova

E-mail:

G. N. Ermacova

Transnistrian State University

25 October str., 128, Tiraspol, 278000

Moldova

E-mail:

Vladimir Andrunachievici Institute of Mathematics

and Computer Science

5 Academiei str., MD-2028, Chisinau

Moldova

E-mail:

G. N. Ermacova

Transnistrian State University

25 October str., 128, Tiraspol, 278000

Moldova

E-mail:

- Commutator subgroup of Sylow 2-subgroups of alternating group and the commutator width in the wreath product
- On two stability types for a multicriteria integer linear programming problem
- Closure operators in modules and their characterizations
**On the number of topologies on countable skew fields**- New Algorithms for Finding the Limiting and Differential Matrices in Markov Chains
- Solution of the problem of the center for cubic differential systems with three affine invariant straight lines of total algebraic multiplicity four
- On self-adjoint and invertible linear relations generated by integral equations
- Loops with invariant flexibility under the isostrophy