General information

Nationality: Ukrainian

Birth 6.08.1958, vill. Prymorske, Odesa region

Current professional address

Faculty of Mathematics, Physics and Informational Technologies. Odesa I.I. Mechnikov National University, Main Building, 2, Dvorianska Str., 65082 Odesa Ukraine

Phone

(+38) 067 915 47 34

Email

This email address is being protected from spambots. You need JavaScript enabled to view it.

Civil status

married, I have two sons, born in 1982, and 1993

ORCID ID

ORCID

Scopus ID

25960165900

Web

ONU profile
ResearchGate

Languages

Good: English, French, Fluent: Russian, and Ukrainian (mother tongue)

h-index

19 (Scopus), on 30.10.2025

Vita

Volodymyr Kiosak is a researcher in differential geometry, a university lecturer with extensive experience in educating the younger generation of mathematicians, author of monographs, textbooks and more than 150 articles. V. Kiosak is the executive secretary of the editorial board of the specialized scientific journal "Mathematical Methods of Mechanics" Journal and participates the international scientific committee of the annual conference "Algebraic and Geometric Methods of Analysis" (Odesa). At the department, he is responsible for scientific information and for the work of the mathematical club for students. V. Kiosak regularly participates in the discussion of his results by participating in conferences held both in Ukraine and at European conferences. For four years (from 2019 to 2022), he led his section "Geometry and Its Applications" at the International Conference on Application of Mathematics in Technical and Natural Sciences (Albena, Bulgaria). In 2008, he was a researcher at the Schiller University of Jena (Germany). After that, for five years with interruptions, he worked on the programs DFG Priority Program 1154 - "Global Differential Geometry"; DFG MA 2565/2 "H-projectivity equivalent metrics"; Research Training Group 1523 "Quantum and Gravity Field" at the University of Jena. He had the experience of working with Czech colleagues from Palacky University (Olomouc, Czech Republic), where he completed his doctoral studies, presented his dissertation and received a PhD in mathematics with a specialization in Algebra and Geometry.

Professional experience

• 01.09.2024 – till now — Odesa I.I. Mechnikov National University — Professor of Department of Algebra, Geometry and Differential Equations
• 01.09.2018 – till now — Odesa State Academy of Civil Engineering and Architecture, Odesa, Ukraine — Professor of Department of Higher Mathematics
• 1.09.2012- 26.08.2017 — Crimean Humanitarian University (Armiansk, Crimea, Ukraine) — Docent of Department of economics and management
• 01.09.2011-19.08.2012 — Odesa National Polytechnic University — Docent of Department of informatics and management of protection of informational systems
• 27.10.2008-14.02.2011 — South-Ukrainian K.D. Ushynskyi Pedagogic State University (Odesa, Ukraine) — Docent of Department of Higher Mathematics
• 1.01.2008 – 20.10.2008 — Friedrich Schiller University, Jena, Germany — Research fellow
• 11.01.1990- 31.08.2003 — Odesa National Economic University (known previously as Odesa Institute of National Economy), Ukraine — Reader in Higher Mathematics
• 02.12.1981-10.12.1985 — Odesa K.D. Ushynskyi pedagogic Institute, Ukraine — Assistant in Department of geometry

Education and Qualification

• 2021 — Odesa State Academy of Civil Engineering and Architecture, Odesa, Ukraine — The title of professor, in the Department of Higher Mathematics
• 1.02.2018 — Institute of mathematics of National Academy of Sciences Ukraine — The habilitation dissertation. Topic: Mappings of special pseudo-Riemannian spaces
• 01.12.2014-30.11.2017 — Taras Shevchenko National University of Kyiv — Doctoranture (second degree after PhD), preparation for habilitation
• 8.11.2007 — Physical – technical B.I. Verkin Institute of low temperatures National Academy of Sciences of Ukraine — The dissertation of candidate of physics and mathematical sciences (PhD) “Geodesic mappings of special Riemannian spaces”
• 2002 — Palacký University Olomouc, Czech Republic — PhD in mathematics, Specialization: “Algebra and Geometry”
• 2002 — Palacký University Olomouc, Czech Republic — Doctorate in mathematics
• 11.12.1985-11.12.1988 — Odesa I.I. Mechnikov State University — Aspiranture (doctorate) in «Geometry and topology»
• 1976-1981 — Odesa I.I. Mechnikov State University — Diploma in Mathematics

Main areas of interest

• Riemannian geometry
• Tensor analysis
• General theory of relativity
• Continuum mechanics

SUPERVISION OF GRADUATE STUDENTS AND POSTDOCTORAL FELLOWS

• Since 10/2021 till now — Supervisor of 4 PhD dissertation (M. Bankovskyi, E. Patrashku, S. Palchyk, O. Kolesnichenko) — Odesa State Academy of Civil Engineering and Architecture
• 12.06.2025 — E. Patrashku successfully presented his PhD thesis in front of the Council PhD 8667 (joint supervision with Prof. V. Isaev) — Odesa State Academy of Civil Engineering and Architecture

TEACHING ACTIVITIES

I teach following courses: Higher Mathematics, Riemannian geometry, Tensor analysis, Probability theory, Econometrics and Differential geometry

ORGANISATION OF SCIENTIFIC MEETINGS

• 2019- till now — Organization committee participant — Annual International conference "Algebraic and Geometric Methods of Analysis" (Odesa)
• 2018-2022 — Organization of a special session — International Conference on Application of Mathematics in Technical and Natural Sciences (Albena, Bulgaria)

International Projects

• 2003-2010 — DFG Priority Program 1154 - "Global Differential Geometry", participant, PI prof. V. Matveev — Jena, Germany
• 2010-2012 — DFG MA 2565/2 "H-projectivity equivalent metrics", participant, PI prof. V. Matveev — Jena, Germany
• 2009-2018 — Research Training Group 1523 "Quantum and Gravity Field", participant, PI prof. V. Matveev — Jena, Germany

Relevant Publications by Volodymyr Kiosak

Peer-reviewed Articles

2025

• Prishlyak, O., Kiosak, V., & Savchenko, O. (2025). Distinguishing graph of a function with three critical points on a closed 3-manifold. Ukrainian Mathematical Journal, 77(1). DOI

2024

• Kiosak, V., Latysh, O., & Kuzmich, V. (2024). Split curvature. Proceedings of the International Geometry Center, 17(3), 232–243. DOI
• Kiosak, V., Prishlyak, O., & Gudyreva, O. (2024). On geodesic mappings of threesymmetric spaces. Proceedings of the International Geometry Center, 17(1), 56-64. DOI

2023

• Kiosak, V., Lesechko, O., & Latysh, O. (2023). On geodesic mappings of symmetric pairs. Proceedings of the International Geometry Center, 15(3–4), 230–238. DOI

2022

• Kiosak, V., Savchenko, A., & Makarenko, L. (2022). Invariant transformations that preserve mappings. AIP Conference Proceedings, 2522, 120003. DOI
• Kiosak, V., Savchenko, A., & Kusik, L. (2022). On the properties of Ricci solitons. AIP Conference Proceedings, 2522, 120006. DOI
• Kiosak, V., Kusik, L., & Isaiev, V. (2022). Geodesic Ricci-symmetric pseudo-Riemannian spaces. Proceedings of the International Geometry Center, 15(2), 110–120. DOI

2021

• Kiosak, V., Prishlyak, O., & Lesechko, O. (2021). On the geodesic mappings of pseudo-Riemannian spaces with special supplementary tensor. Proceedings of the International Geometry Center, 14(4), 13–26. DOI
• Kiosak, V., Latysh, O., & Lesechko, O. (2021). Geodesic mappings of compact quasi-Einstein spaces, II. Proceedings of the International Geometry Center, 14(1), 80–91. DOI

2020

• Kiosak, V., Savchenko, A., & Khniunin, S. (2020). On the typology of quasi-Einstein spaces. AIP Conference Proceedings, 2302, 040003. DOI
• Kiosak, V., Savchenko, A., & Kamienieva, A. (2020). Geodesic mappings of compact quasi-Einstein spaces with constant scalar curvature. AIP Conference Proceedings, 2302, 040002. DOI
• Doikov, D., & Kiosak, V. (2020). On the Schwarzschild model for gravitating objects of the Universe. AIP Conference Proceedings, 2302, 040001. DOI
• Kiosak, V., Savchenko, A., & Kovalova, G. (2020). Geodesic mappings of compact quasi-Einstein spaces, I. Proceedings of the International Geometry Center, 13(1), 35–48. DOI
• Kiosak, V. A., & Kovalova, G. V. (2020). Geodesic mappings of quasi-Einstein spaces with a constant scalar curvature. Mathematical Studies, 53(2), 212–217. DOI

2019

• Zarichnyi, M., Savchenko, A., & Kiosak, V. (2019). Strong topology on the set of persistence diagrams. AIP Conference Proceedings, 2164, 040006. DOI
• Kiosak, V., Savchenko, A., & Gudyreva, O. (2019). On the conformal mappings of special quasi-Einstein spaces. AIP Conference Proceedings, 2164, 040001. DOI

2018

• Kiosak, V., Savchenko, A., & Shevchenko, T. (2018). Holomorphically projective mappings of special Kähler manifolds. AIP Conference Proceedings, 2025, 080004. DOI
• Kiosak, V., Lesechko, O., & Savchenko, O. (2018). Mappings of spaces with affine connection. 17th Conference on Applied Mathematics, APLIMAT 2018 – Proceedings, 563–569.

2014

• Kiosak, V., & Matveev, V. S. (2014). There exist no 4-dimensional geodesically equivalent metrics with the same stress-energy tensor. Journal of Geometry and Physics, 78, 1–11. DOI

2012

• Kiosak, V. A. (2012). On the conformal mappings of quasi-Einstein spaces. Journal of Mathematical Sciences (United States), 184(1), 12–18. DOI
• Fedorova, A., Kiosak, V., Matveev, V. S., & Rosemann, S. (2012). The only Kähler manifold with degree of mobility at least 3 is (CPⁿ, g Fubini–Study). Proceedings of the London Mathematical Society, 105(1), 153–188. DOI

2010

• Kiosak, V. A., Matveev, V. S., Mikes, J., & Shandra, I. G. (2010). On the degree of geodesic mobility for Riemannian metrics. Mathematical Notes, 87(3–4), 586–587. DOI
• Kiosak, V., & Matveev, V. S. (2010). Proof of projective Lichnerowicz conjecture for pseudo-Riemannian metrics with degree of mobility greater than two. Communications in Mathematical Physics, 297(2), 401–426. DOI
• Hinterleitner, I., & Kiosak, V. (2010). Special Einstein’s equations on Kähler manifolds. Archivum Mathematicum, 46(5), 333–337.
• Evtushik, L., Kiosak, V., & Mikes, J. (2010). The mobility of Riemannian spaces with respect to conformal mappings onto Einstein spaces. Russian Mathematics, 54(8), 29–33. DOI

2009

• Kiosak, V., & Matveev, V. S. (2009). There are no conformal Einstein rescalings of complete pseudo-Riemannian Einstein metrics. Comptes Rendus Mathématique, 347(17–18), 1067–1069. DOI
• Kiosak, V., & Matveev, V. S. (2009). Complete Einstein metrics are geodesically rigid. Communications in Mathematical Physics, 289(1), 383–400. DOI
• Hinterleitner, I., & Kiosak, V. (2009). φ(Ric)-vector fields on conformally flat spaces. AIP Conference Proceedings, 1191, 98–103. DOI
• Bolsinov, A. V., Kiosak, V., & Matveev, V. S. (2009). A Fubini theorem for pseudo-Riemannian metrics. Journal of the London Mathematical Society, 80(2), 341–356. DOI

2008

• Hinterleitner, I., & Kiosak, V. A. (2008). φ(Ric)-vector fields in Riemannian spaces. Archivum Mathematicum, 44(5), 385–390.

2006

• Mikes, J., Hinterleitner, I., & Kiosak, V. A. (2006). On the theory of geodesic mappings of Einstein spaces and their generalizations. AIP Conference Proceedings, 861, 428–435. DOI

2004

• Gavrilchenko, M.L., Kiosak, V.A., Mikes, J. (2004). Geodesic deformations of hypersurfaces of Riemannian spaces. Izvestiia vuzov. Kazan, 11 (250). (In Russian) PDF

Monographs

• 2012 — Kiosak, V., Chepurna, O. (2012). Diffeomorphisms preserving the Einstein tensor. (In Russian) Saarbrücken: Lambert Academic Publishing.
• 2008 — Mikes, J., Kiosak, V., & Vanzurová, A. (2008). Geodesic mappings of manifolds with affine connection. Olomouc: Palacký University Press.

Relevant textbooks

• 2017 — Kiosak, V., Pryshliak O. (2017). Riemannian Geometry. Kyiv: Institute of Mathematics, National Academy of Sciences of Ukraine. (In Ukrainian) PDF

Relevant publications without peer-review

2020

• Lesechko, O., & Kiosak, V. (2020). Geodesic mappings of spaces with special vector fields. Mechanics and Mathematical Methods, 2(1), 56–62. Odesa. (In Ukrainian)

2019

• Kiosak, V., & Lesechko, O. V. (2019). Models of mechanical systems preserving the Weyl tensor. Mechanics and Mathematical Methods, 1(1), 25–34. Odesa. (In Ukrainian)

2012

• Kiosak, V. (2012). On the number of solutions of one system of algebraic equations. Proceedings of the International Geometry Center, 5(2), 43–52. (In Ukrainian)

2011

• Chepurna, O. Ye., & Kiosak, V. (2011). Invariant transformations preserving analytically planar curves. Proceedings of the International Geometry Center, 4(3), 15–23. Odesa.
• Kiosak, V. (2011). On the projective Lichnerowicz conjecture for pseudo-Riemannian spaces with great mobility. Informatics and Mathematical Methods in Modeling, 1, 50–74. Odesa.
• Kiosak, V. (2011). On conformal mappings of almost Einstein spaces. Mathematical Methods and Physico-Mechanical Fields, 54(2), 17–22. Lviv. (In Ukrainian)
• Kiosak, V. (2011). On equidistant pseudo-Riemannian spaces. Mathematical Studies, 36(1), 21–25. Lviv. (In Ukrainian)