# Employees

## Petro I. Stetsyuk

Professor,

DSc. in Applied Mathematics,

Senior Researcher

DSc. in Applied Mathematics,

Senior Researcher

### Education and Career:

1982 — graduated from State University Moscow Institute of Physics and Technology, Faculty of Control and Applied Mathematics.

1982-1984 — Intern-Researcher, Institute of Cybernetics of AS of USSR.

1984-1990 — Junior Researcher, Institute of Cybernetics of AS of USSR.

1990-1997 — Researcher, V.M. Glushkov Institute of Cybernetics of NAS of Ukraine.

1992 — graduated from PhD Studies, State University Moscow Institute of Physics and Technology.

1996 — defended PhD thesis «Subgradient methods with space transformation for minimisation of nonsmooth convex functions». Academic supervisor — Doctor of Physical and Mathematical Science, Professor, Correspondent-member of NAS of Ukraine Naum Z. Shor.

Since 1997 — Senior Researcher, V.M. Glushkov Institute of Cybernetics of NAS of Ukraine.

2011-2013 — Associate Professor, Department of Information Systems, Faculty of Cybernetics, Taras Shevchenko National University of Kyiv.

2013 — defended Doctoral thesis «Algorithms of undifferentiated optimization and Lagrange' dual evaluations in complex extremal problems». Scientific consultant — Doctor of Physical and Mathematical Science, Professor, Academician of NAS of Ukraine Ivan V. Sergienko.

2014-2016 — Professor, Department of Information Systems, Faculty of Cybernetics, Taras Shevchenko National University of Kyiv.

2016-2019 — Professor, Department of Information Systems, Faculty of Computer Science and Cybernetics, Taras Shevchenko National University of Kyiv.

Since 2019 — Professor, Department of Intelligent Software Systems, Faculty of Computer Science and Cybernetics, Taras Shevchenko National University of Kyiv.

### Activities:

- Since 2006 — Member of editorial board of collection of scientific works The theory of optimal solutions .

### Research Interests:

- Linear and nonlinear programming.
- Methods for minimizing nonsmooth functions and their applications in block, matrix, polynomial and boolean optimization problems.
- Mathematical and software of applied optimization problems.

### Selected papers:

- P. I. Stetsyuk, A. B. Mitsa Parameter Optimization Problems for Multilayer Optical Coatings // Cybernetics and Systems Analysis, 2005, Volume 41, Issue 4, pp. 564-571.
- P. I. Stetsyuk Functionally redundant constraints for Boolean quadratic-type optimization problems // Cybernetics and Systems Analysis, 2005, Volume 41, Issue 6, pp. 932-935.
- P. I. Stetsyuk New quadratic models for the maximum weighted cut problem // Cybernetics and Systems Analysis, 2006, Volume 42, Issue 1, pp. 54-64.
- O. A. Berezovskii, P. I. Stetsyuk An approach to determining Shor's dual quadratic estimates // Cybernetics and Systems Analysis, 2008, Volume 44, Issue 2, pp. 225-233.
- P. I. Stetsyuk, A. P. Lykhovyd LP-oriented upper bounds for the weighted stability number of a graph // Cybernetics and Systems Analysis, 2009, Volume 45, Issue 1, pp. 141-152.
- S. Butenko, P. Pardalos, I. Sergienko, V. Shylo, P. Stetsyuk Estimating the size of correcting codes using extremal graph problems // Optimization, Volume 32 of the series Springer Optimization and Its Applications, 2009, pp. 227-243.
- I. V. Sergienko, M. V. Mikhalevich, P. I. Stetsyuk, L. B. Koshlai Models and information technologies for decision support during structural and technological changes // Cybernetics and Systems Analysis, 2009, Volume 45, Issue 2, pp. 187-203.
- P. I. Stetsyuk, E. A. Nurminski Nonsmooth penalty and subgradient algorithms to solve the problem of projection onto a polytope // Cybernetics and Systems Analysis, 2010, Volume 46, Issue 1, pp. 51-55.
- P. I. Stetsyuk, L. B. Koshlai Optimal normalized structure of demand and value added in a productive leontief model // Cybernetics and Systems Analysis, 2010, Volume 46, Issue 5, pp. 729-736.
- I. V. Sergienko, P. I. Stetsyuk On N. Z. Shor's three scientific ideas // Cybernetics and Systems Analysis, 2012, Volume 48, Issue 1, pp. 2-16.
- P. I. Stetsyuk, J.-F. Emmenegger Maximum Singular Value of Matrix and its Economic Interpretation // Cybernetics and Systems Analysis, 2014, Volume 50, Issue 3, pp. 368-373.
- V. V. Dmitrenko, A. V. Iershov, P. I. Stetsyuk, A. P. Lykhovid, Yu. P. Laptin, D. R. Schwartz, A. A. Mekler, V. M. Kavsan Determination of molecular glioblastoma subclasses on the basis of analysis of gene expression // Cytology and Genetics, 2014, Volume 48, Issue 6, pp. 383-391.
- A. A. Kovalenko, T. E. Romanova, P. I. Stetsyuk Balance Layout Problem for 3D-Objects: Mathematical Model and Solution Methods // Cybernetics and Systems Analysis, 2015, Volume 51, Issue 4, pp. 556-565.
- V. I. Zorkaltsev, S. M. Perzhabinsky, P. I. Stetsyuk Using the Interior Point Method to Find Normal Solutions to a System of Linear Algebraic Equations with Bilateral Constraints on Variables // Cybernetics and Systems Analysis, 2015, Volume 51, Issue 6, pp. 896-904.
- P. I. Stetsyuk, T. E. Romanova, G. Scheithauer On the global minimum in a balanced circular packing problem // Optimization Letters, 2016, Volume 10, Issue 6, pp. 1347-1360.
- P. I. Stetsyuk Problem Statements for k-Node Shortest Path and k-Node Shortest Cycle in a Complete Graph* // Cybernetics and Systems Analysis, Volume 52, Issue 1, 2016, pp. 71-75.

### Teaching:

**Convex Optimization Methods**(lectures, labs) — 2nd year masters, 121 Software Engineering.