General Topology. Topological Algebra.

1997 — канд. физ.-мат. наук;
2003 — ст. н. с.;
2008 — доцент.

1. O. Gutik, D. Pagon, and D. Repovš, “The continuity of the inversion and the structure of maximal subgroups in countably compact topological semigroups”, Acta Mathematica Hungarica, 124:3 (2009), 201–214      
2. T. O. Banakh, S. Dimitrova, and O. V. Gutik, “The Rees-Suschkewitsch Theorem for simple topological semigroups”, Mat. Stud., 31:2 (2009), 211–218  
3. O. Gutik, J. Lawson, and D. Repov., “Semigroup closures of finite rank symmetric inverse semigroups”, Semigroup Forum, 78:2 (2009), 326–336      
4. O. V. Gutik, and D. Repovš, “On linearly ordered H-closed topological semilattices”, Semigroup Forum, 77:3 (2008), 474–481      
5. O. V. Gutik, and D. Repovš, “On countably compact 0-simple topological inverse semigroups”, Semigroup Forum, 75:2 (2007), 464–469      

• Институт прикладных проблем механики и математики им. Я. С. Пидстригача НАН Украины, г. Львов
• Львовский национальный университет им. И. Франко