M. M. Choban

Tiraspol State University, Republic of Moldova

str. Iablochkin 5, Chisinau, Moldova

E-mail:

I. A. Budanaev

Institute of Mathematics and Computer Sciences of ASM

str. Academiei, 3/2, MD-2028, Chisinau, Moldova

E-mail:

Tiraspol State University, Republic of Moldova

str. Iablochkin 5, Chisinau, Moldova

E-mail:

I. A. Budanaev

Institute of Mathematics and Computer Sciences of ASM

str. Academiei, 3/2, MD-2028, Chisinau, Moldova

E-mail:

- Shape dimension of maps
- Semi-integral filters and semi-integral
**BL**-algebras - Orthogonality and retract orthogonality of operations
- An Approach for Determining the Optimal Strategies for an Average Markov Decision Problem with Finite State and Action Spaces
- The Center of the Lattice of Factorization Structures
- Properties of finite unrefinable chains of ring topologies for nilpotent rings
- Quartic differential systems with an invariant straight line of maximal multiplicity
**Distances on Free Semigroups and Their Applications**- Integrability conditions for a class of cubic differential systems with a bundle of two invariant straight lines and one invariant cubic