Institute annual report 2026
last updates:
The ongoing 2026 institute projects approved by the Romanian Academy
Themes:
- Numerical methods for solving nonlinear equations, with applications to matrix equations, order of convergence.
- Numerical methods for differential equations, inverse problems, and data assimilation. Finite element methods, methods based on neural networks. Regularization methods.
- Interpolation and approximation operators: study of Appell polynomials, Durrmeyer and Kantorovich type operators, and binomial-type polynomials; Stancu-Schurer type extensions for Cheney-Sharma operators. Shepard operators for multidimensional interpolation, with applications to image reconstruction.
- Ulam-type stability results for partial operators, existence theorems for solutions of abstract evolution equation systems subject to nonlocal initial conditions.
Coordinator: Dr. Emil Cătinaş
Results
Papers in JCR journals from abroad
Papers in JCR journals from Romania
Chapters in books in recognized publishing houses/proceedings
Papers accepted and published online
Preprints in Arxiv/submitted/accepted
Themes:
- Establishing convergence criteria for explicit L-schemes for linearizing coupled flow and reactive transport problems in porous media. Exploring the limitations of programming with the Chebfun system for solutions of the Richards equation.
- Applying spectral collocation methods for the study of nonlinear boundary value and singular eigenvalue problems. Using the Chebfun software package in parallel for comparison. The analytical continuation of solutions.
- Analyzing time series in astronomy and astrophysics, modeling them with various models, and optimizing the parameters on which these models depend (using global optimization algorithms).
Coordinator: Dr. Călin-Ioan Gheorghiu
Scientific results
Papers in JCR journals from abroad
Chapters in books in recognized publishing houses/proceedings
Papers published in journals from other databases
Themes:
- Analysis of some mathematical models derived from physics, biology, economics, and medicine: qualitative analysis of solutions (existence, uniqueness, localization, multiplicity, equilibrium, control, and approximation); mathematical models of ocean wave dynamics.
Coordinator: Prof. Dr. Radu Precup, corresponding member of the Romanian Academy
Papers in JCR journals from abroad
Papers published in journals from other databases
Preprints in Arxiv/submitted/accepted
Human resources
Researchers
The Numerical Analysis and Approximation Theory workgroup:
- Dr. Emil Cătinaş
- Prof. Dr. Octavian Agratini (workgroup coordinator)
- Dr. Mihai Nechita
- Dr. Diana Otrocol
- Imre Boros
- Andra Malina
- Eduard Grigoriciuc
The Numerical Modeling workgroup:
- Prof. Dr. Radu Precup, corresponding member of the Romanian Academy
- Dr. Călin-Ioan Gheorghiu (workgroup coordinator)
- Dr. rer. nat. habil. Nicolae Suciu
- Dr. Maria Crăciun
- Andrei Stan
- Rareș Răhăian
Doctoral students/postdocs:
Doctoral students in 2026:
Postdoc students in 2025: –
PhD advisors
Prof. dr. Radu Precup, corresponding member of the Romanian Academy
PhD students (2025):
- Alexandru Hofman, Control problems for systems of Kolmogorov type, at UBB Cluj
- David Brumar, The analysis of some mathematical models in fluid dynamics, at UBB Cluj.
- … (to be completed)
Coordination of doc and postdoc students: Nataliia Kolun (Ukraine).
Mentor in some research projects: Lorand Parajdi, Mihai Nechita, Maria Neuss-Radu.
Prof. Univ. dr. Octavian Agratini
(no PhD students in 2025)
Dr. rer. nat. habil. Nicolae Suciu
(no PhD students in 2025)
Papers published in 2026
Papers in JCR journals from abroad
Papers in JCR journals from Romania
Chapters in books in recognized publishing houses/proceedings
Papers published in journals from other databases
Papers accepted and published online
Preprints in Arxiv/submitted/accepted
Prizes, outstanding achievements
- Prof. Dr. R. Precup has H-index ISI 16: https://www.webofscience.com/wos/author/rid/B-8158-2011 (h-index Google Scholar 23)
- Dr. rer. nat. habil. N. Suciu has H-index ISI 13: https://www.webofscience.com/wos/author/rid/N-7971-2017 (h-index Google Scholar 14)
- Prof. Dr. O. Agratini has H-index ISI 10: https://www.webofscience.com/wos/author/rid/B-6607-2012 (h-index Google Scholar 20)
Since 2022, O. Agratini is professor emeritus at the Faculty of Mathematics and Computer Science (Babeş-Bolyai University).
Editorial activity
Editors-in-Chief/deputy/senior editors of JCR/ISI or Scopus journals
- R. Precup, Editor-in-Chief of Studia UBB Math. (ISI/ESCI)
- R. Precup, Deputy Editor-in-Chief of Fixed Point Theory (Cluj) (ISI)
- O. Agratini, Editor-in-Chief of J. Numer. Anal. Approx. Theory (Scopus)
- E. Cătinaş, Editor-in-Chief of J. Numer. Anal. Approx. Theory (Scopus)
- O. Agratini, senior Editor of Studia UBB Math. (ISI/ESCI)
Members of editorial boards of JCR/ISI journals
– JCR/ISI journals abroad
- R. Precup, section Editor of Fixed Point Theory and Algorithms for Sciences and Engineering (Springer);
- R. Precup, editor of Journal of Inequalities and Special Functions.
– JCR/ISI journals from Romania
- R. Precup, member of the Editorial Board of Proceedings of the Romanian Academy- Series A
- R. Precup, member of the Editorial Board of Carpathian Journal of Mathematics
- R. Precup, Deputy Editor-in-Chief of Fixed Point Theory (Cluj)
- R. Precup, Editor-in-Chief of Studia UBB Math.
- O. Agratini, senior Editor of Studia UBB Math.
- O. Agratini, member of the Editorial Board of J. Science and Arts.
- M. Nechita, secretary of Studia UBB Math.
Members of editorial boards of journals of the Romanian Academy
- O. Agratini, Editor-in-Chief of J. Numer. Anal. Approx. Theory
- E. Cătinaş, Editor-in-Chief of J. Numer. Anal. Approx. Theory
- M. Nechita, secretary of J. Numer. Anal. Approx. Theory
- A. Malina, secretary of J. Numer. Anal. Approx. Theory
- A. Stan, secretary of J. Numer. Anal. Approx. Theory
- R. Precup, member of the Editorial Board of Mathematica (Cluj)
- O. Agratini, member of the Editorial Board of Mathematica (Cluj)
Members of editorial boards of other journals from abroad
- R. Precup, member of the Editorial Board of Discussiones Mathematicae Differential Inclusions, Control and Optimization (Poland);
- O. Agratini, member of the Editorial Board of Open Journal of Discrete Mathematics;
- R. Precup, member of the Editorial Board of Mathematics in Engineering, Science and Aerospace (USA).
Members of editorial boards of other journals from Romania
- R. Precup, member of the Editorial Board of Transylvanian Journal of Mathematics and Mechanics;
- N. Suciu, member of the Editorial Board of ROMAI Journal
- C.I. Gheorghiu, member of the Editorial Board of ROMAI Journal
Conferences
Conferences organized by the Institute
- The international conference Numerical Analysis, Numerical Modeling, Approximation Theory (NANMAT 2026), organized by ICTP in 2026.
Invited speakers:
Talks given/conferences attended by the members of the Institute
International conferences
Presentations at seminars
Scientific collaborations
ICTP has signed in July 2023 a collaboration protocol with Data and Predictive Analytics Center (DPAC – Rochester University, USA), based on some existing collaborations. The agreement aims in solving some problems in the analysis, processing and modelling of some time series from astronomy.
International scientific collaborations
- N. Suciu, collaboration with F.A. Radu, from Univ. of Bergen, Norway
- N. Suciu, collaboration with A. Muntean, from Karlstad University, Sweden
- N. Suciu, collaboration with I.S. Pop, from Univ. of Hasselt, Belgium
- E. Cătinaş, collaboration with F.A. Radu, from Univ. of Bergen, Norway
- R. Precup, collaboration with Jorge Rodriguez-Lopez, from Univ. of Santiago de Compostela, Spain
- R. Precup, collaboration with Sylvain Koumla, from Univ. Abéché, Chad;
- R. Precup, collaboration with Christian Guenther, from Univ. Hannover, Germany;
- R. Precup, collaboration with Maria Neuss-Radu, ffrom FAU Erlangen-Nürnberg, Germany;
- R. Precup, collaboration with Renata Bunoiu, from Univ. Lorraine, France;
- M. Nechita, collaboration with Erik Burman, from University College London;
- M. Nechita, collaboration with Lauri Oksanen, from University of Helsinki;
- M. Nechita, collaboration with Miguel A. Fernández, from INRIA Paris;
- M. Nechita, collaboration with Muriel Boulakia, from Université de Versailles;
- M. Nechita, collaboration with Maria Neuss-Radu, from FAU Erlangen-Nürnberg, Germany;
- O. Agratini, collaboration with Ulrich Abel, from Technische Hochschule Mittelhessen, Friedberg, Germany;
- O. Agratini, collaboration with Harun Karsli, from Abant Izzet Baysal University, Bolu, Turkey;
- O. Agratini, collaboration with Francesco Altomare, from University of Bari Aldo Moro, Italy;
- O. Agratini, collaboration with Ralf Rigger, from Friedberg, Germany;
- O. Agratini, collaboration with Tanmoy Som, from Indian Institute of Technology (BHU) Varanasi;
- O. Agratini, collaboration with Quy Muoi Oham;
- M. Craciun, collaboration with Mihai Barbosu, Rochester Institute of Technology, New York, USA;
- A. Stan, collaboration with Du Wei-Shih, National Kaohsiung Normal University, Taiwan;
- A. Stan, collaboration with Calin Iulian Martin, University of Vienna.
- A. Stan, collaboration with Jorge Rodriguez-Lopez, University of Santiago.
National scientific collaborations
- O. Agratini, collaboration with Mircea Ivan, Technical University Cluj-Napoca;
- O. Agratini, collaboration with Radu Păltănea, Transilvania University of Brașov;
- M. Craciun, collaboration with Tiberiu Harko, from Babes-Bolyai University, Cluj-Napoca;
- M. Craciun, collaboration with Alexandru Pop, Astronomical Institute, Astronomical Observatory Cluj-Napoca, Romanian Academy;
- A. Malina, collaboration with Teodora Catinas, from Babes-Bolyai University, Cluj-Napoca;
- E. Grigoriciuc, collaboration with Mirela Kohr, from Babes-Bolyai University, Cluj-Napoca;
- R. Precup, collaboration with Petru Jebelean, from West University, Timisoara;
- R. Precup, collaboration with Mirela Kohr, from Babes-Bolyai University, Cluj-Napoca
- R. Precup, collaboration with Nataliia Kolun, from Babes-Bolyai University, Cluj-Napoca;
- R. Precup, collaboration with Lorand Parajdi, from Babes-Bolyai University, Cluj-Napoca;
- R. Precup, collaboration with Veronica Ilea, from Babes-Bolyai University, Cluj-Napoca;
- R. Precup, collaboration with Adela Novac, from Technical University Cluj-Napoca;
- R. Precup, collaboration with Stefan Haplea, from Iuliu Hațieganu University of Medicine and Pharmacy Cluj-Napoca;
- A. Stan, collaboration with Cristina Gheorghe from Babes-Bolyai University, Cluj-Napoca.
Membership in professional organizations
- R. Precup, O. Agratini, D. Otrocol: SSMR (Societatea de Științe Matematice din România) members.
- E. Cătinaş, SIAM (Society for Industrial and Applied Mathematics) member (since 2007), SSMR (Societatea de Științe Matematice din România).
- E. Grigoriciuc: SSMR (Romanian Mathematical Society) member (since 2020), AMS (American Mathematical Society) member (since 2021), LMS (London Mathematical Society) member (since 2021), EMS (European Mathematical Society) member (since 2021), SIAM (Society for Industrial and Applied Mathematics) member (since 2024).
- C.I. Gheorghiu, ROMAI (Societatea Română de Matematică Aplicată și Industrială), GAMM (Gesellschaft für angewandte Mathematik und Mechanik), ECMI (European Consortium for Mathematics in Industry) member.
- O. Agratini: AMS (American Mathematical Society) member.
- M. Crăciun, SIAM (Society for Industrial and Applied Mathematics) member.
- M. Nechita, SIAM (Society for Industrial and Applied Mathematics) member, SSMR (Societatea de Științe Matematice din România).
- A. Malina, SIAM (Society for Industrial and Applied Mathematics), AMS (American Mathematical Society) member.
Grants/contracts/scholarships
Peer review
Members of PhD/habilitation evaluation committees
Members of PhD supervising committees
Referee reports for peer reviewed journals:
Book reviews:
- A. Stan: ??.
- E. Grigoriciuc: ??.
Reviews (written in 2026)
for Mathematical Reviews:
- O. Agratini:
- R. Precup:
- A. Malina:
- C. Mustăța (honorary member):
For ZBL Math:
- R. Precup:
- C.I. Gheorghiu: