Natalija LadzoryshynDepartment of Algebra, Pidstryhach 



September 24, 2019 at 15:05 in Lecture Room 377 
Natalija LadzoryshynDepartment of Algebra, Pidstryhach 



September 24, 2019 at 15:05 in Lecture Room 377 
Volodymyr ZeliskoDepartment of Algebra and Logic 



April 16, 2019 at 15:05 in Lecture Room 377 
We consider the problem of equivalence and semiscalar equivalence of the Kronecker products of polynomial matrices and their separation of factors.
Vasyl’ PetrychkovychDepartment of Algebra, Pidstryhach 
Nataliia DzhaliukDepartment of Algebra, Pidstryhach 



March 12, 2019 at 15:05 in Lecture Room 377 
We investigate equivalences, factorizations, and matrix unilateral and bilateral equations in the rings of the block matrices. In the first part, we consider factorizations of the block matrices, in particular, the block triangular and the block diagonal matrices over integral domains of finitely generated principal ideals. Conditions for existence and uniqueness up to the association of the factorizations in such rings are established.
Volodymyr ShchedrykDepartment of Algebra, Pidstryhach 



February 26, 2019 at 15:05 in Lecture Room 377 
We describing the properties of g.c.d. and l.c.m. of matrix equation solutions over
commutative elementary divisor domain.
Bohdan ZabavskyDepartment of Algebra and Logic 
Andriy RomanivDepartment of Algebra, Pidstryhach 



November 27, 2018 at 15:05 in Lecture Room 377 
In the talk we investigate the elementary reduction of matrices over rings with almost stable range 1.
Vasyl’FedorchukInstitute of Mathematics, 
Volodymyr FedorchukDepartment of Algebra, 



November 6, 2018 at 15:05 in Lecture Room 377 
In the talk we present the results concerning the relationship between the structural properties of lowdimensional (dim L ≤ 3) nonconjugate subalgebras of the Lie algebra of the Poincare group P(1,4) and the properties of the reduced equations for the eikonal equation. To obtain those results, we have performed the classification of the invariants as well as of the ansatzes for the above mentioned subalgebras. We also present some classes of invariant solutions for the eikonal equation.
Bogdan ShavarovskiiDepartment of Algebra, Pidstryhach 



October 16, 2018 at 15:05 in Lecture Room 377 
In this report the semiscalar equivalence of polynomial matrices of threeorder is
investigated. In particular, the systems of invariants of reduced matrices have been found.
Session of the Lviv Algebraic Seminar dedicated to the memory of professorVasyl’ Ivanovych Andriychuk 

September 18, 2018 at 15:00 in Lecture Room 377 