Dumitru Cozma

Department of Mathematics

Tiraspol State University

5 Gh. Iablocichin str., Chisinau

MD2069, Republic of Moldova

E-mail:

Anatoli Dascalescu

Institute of Mathematics and Computer Science

5 Academiei str., Chisinau

MD2028, Republic of Moldova

E-mail:

Department of Mathematics

Tiraspol State University

5 Gh. Iablocichin str., Chisinau

MD2069, Republic of Moldova

E-mail:

Anatoli Dascalescu

Institute of Mathematics and Computer Science

5 Academiei str., Chisinau

MD2028, Republic of 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**