**Education**:

**Scientific degree**: Doctor of sciences in physics and mathematics (01.01.06 algebra and number theory)
(doctoral thesis "Factorization and unilateral equivalence of matrices
over commutative elementary divisor domain", 2012).

**Scientific title**: Senior Research Fellow (since 2014).

**Position**: Leading Research Fellow (since 2013).

**In Institute**: from 1981.

**Research interests**: linear algebra; matrix theory; matrix equation;
rings theory.

**Main scientific results**:

1.
The matrix factorization theory over commutative elementary divisor
domains is constructed.

2. We constructed the canonical form of matrix with respect to unilateral transformations from complete linear group of matrices with a standard F-skeleton.

3. It is proved that the ring second order matrices over commutative Bezout domain R has stable rank of 1.5 if and only if R has a similar stable rank.

**Major publications***:*

1.
Shchedryk V.P. Factorization of matrices over elementary divisor rings. – Lviv: Pidstryhach Institute for Applied
Problems of Mechanics and Mathematics NAS of Ukraine, 2017. – 304 p. (in Ukrainian) pdf.
(in Russian) pdf.

2.
Shchedryk V.P. Bezout ring of stable range 1.5 and decomposition of complete linear group
into product its subgroups // Ukrainian Mathematical Journal.
– 2017. – **69**, ¹ 1. – P. 113 – 120 (in Ukrainian).

3.
Shchedryk V.P. The value of matrix on a system of roots
of diagonal elements of matrix and its properties
// Applied Problems of Mechanics and Mathematics – 2015. – **13**. – ñ.
187–194 (in Ukrainian).

4. Shchedryk V.P.
Bezout rings of stable range 1.5 // Ukrainian
Mathematical Journal. – 2015. – **67**,
¹ 6. – P. 960-974.

5. Romaniv À.Ì., Shchedryk
V.P. Greatest common
divisor of matrices one of which is a disappear matrix. // Ukrainian Mathematical Journal. – 2014.
– **66**, ¹ 3. – Ñ. 479 – 485.

6.
Romaniv
À.Ì., Shchedryk V.P. Least common right multiple of the matrices
with one invariant factor different from the identity. // Journal of Mathematical Sciences. –
2015. – **208**. ¹ 3 – P. 344-354.

7. Romaniv À.Ì., Shchedryk V.P. Greatest common left
divisor and least
common right multiple of second
order matrices // Mathematical Journal NTSh. – **9**. – 2012. – P. 269–284
(in Ukrainian).

8.
Shchedryk V.P. Commutative domains of elementary divisors and some properties of their
elements // Ukrainian
Mathematical Journal. 2012. – **64**,
¹1. – P. 126–139.

9.
Shchedryk V**.** On the one-side
equivalence of matrices with given
canonical diagonal form // Algebra and Discrete Mathematics. – 2011. – 12, ¹2. – Ñ. 102–111.

10.
Shchedryk V.P. On the Interdependence between Invariant Multipliers of a Block-Triangular
Matrix and Its Diagonal Blocks // Mathematical Notes.
– 2011. – **90, ** ¹4. – Ñ. 584 – 596.

11. Shchedryk V. Matrices divisors generated by transformable matrices // Int. Alg. Conf. dedicated to A.V. Yakovlev. 2010. – S. Peterburg. – Jun 19-24, 2010. Abstracts. S. Peterburg. – P.153-154.

12.
Shchedryk V.P. On invariant factors of block-triangular
matrices and their diagonal blocks
// Dopovidi NAS of Ukraine.
– 2010, ¹ 6. – ñ. 34-36 (in
Ukrainian).

13. Shchedryk V. Factorization of matrices over
elementary divisor domain // Algebra and Discrete Mathematics. – 2009. – ¹2. – P. 79–99.

14. Shchedryk V.P. Some invariants of transforming matrices // Mathematical studies– 2008. – **29**. – P. 121-126 (in Ukrainian).

15. Shchedryk V.P. Some determinant properties of primitive matrices over Bezout B-domain // Algebra and Discrete Mathematics. – 2005. – ¹2. –P. 46–57.

16. Shchedryk V** .** On decomposition of complete linear group into product of some its
subgroups // Visnyk Lviv. Univ., Ser. Mech.-Math. – 2003. –

17. Shchedryk V.P. One class of divisors of matrices
over commutative elementary divisor domain // Mathematical studies. –
2002. – **17**, ¹1. – P.
23–28 (in Ukrainian).

18. Shchedryk V.P. Non associated
matrix with standard Ô-skeleton // Math. Method.
i Fiz. Mekh. Polia. – 2002. – **45**, ¹3. – P. 32–44
(in Ukrainian).

19. Shchedryk V.P. Ô-skeleton of
matrices and its properties // Math. Method.
i Fiz. Mekh. Polia, -2000. - **43**, ¹ 2. – P. 45-51 (in Ukrainian).

20. Shchedryk V.P. On transforming
matrices over some Bezout domains // Math. Method.
i Fiz. Mekh. Polia – 2000. – **43**, ¹ 1. – Ñ. 36–44 (in
Ukrainian).

21. Shchedryk V.P. Structure and
properties of matrices divisors over commutative elementary divisor domains //
Mathematical studies. – 1998. – **10**. –¹2. – Ñ. 115–120 (in Ukrainian).

**E-mail:** shchedrykv@ukr.net