Our team

Dr. Nenad Teofanov (PI)

Full Professor

Faculty of Sciences, University of Novi Sad (UNSFS)

E-mail: nenad.teofanov@dmi.uns.ac.rs 

Phone: +381 21 4852864

Webpage: personal.pmf.uns.ac.rs/nenad.teofanov

Academic background


Nenad Teofanov defended his PhD thesis in 2000 at the Faculty of Sciences University of Novi Sad. 

He is a Full Professor at the Faculty of Sciences University of Novi Sad since 2010.


Research


His research interests are in the fields of time-frequency analysis, generalized functions, pseudodifferential operators, microlocal analysis… He was the leader and member of several bilateral and multilateral international projects.


Some of his most recent publications are:

1. Nuno Costa Dias, João Nuno Prata, Nenad Teofanov, Gabor products and a phase-space approach to nonlinear analysis, Analysis and Applications, 21 (2023), 1417-1446.

2. Francesca Bartolucci, Stevan Pilipović, Nenad Teofanov, Continuity properties of the shearlet transform and the shearlet synthesis operator on the Lizorkin type spaces, Mathematische Nachrichten, 295 (2022), 2318-2337.

3. Nenad Teofanov, Filip Tomic, Extended Gevrey regularity via weighted matrices, Axioms 2022, 11(10), 576.

4. Nenad Teofanov, Joachim Toft, Patrik Wahlberg, Pseudo-differential operators with isotropic symbols, Wick and anti-Wick operators, and hypoellipticity, Journal des Mathématiques Pures et Appliquées.

5. Peter Balazs, Nenad Teofanov, Continuous frames in tensor product Hilbert spaces, localization operators and density operators, Journal of Physics A: Mathematical and Theoretical, 55 (2022) 145201 (25pp) .

Dr. Milica Žigić (TM1)

Associate Professor

Faculty of Sciences, University of Novi Sad (UNSFS)

E-mail: milica.zigic@dmi.uns.ac.rs

Phone: +381 21 4852862 

Webpage: personal.pmf.uns.ac.rs/milica.zigic

Academic background

Milica Žigić defended her PhD thesis in 2014 at the Faculty of Sciences University of Novi Sad. 

She is an Associate Professor at the Faculty of Sciences University of Novi Sad since 2020. 


Research


Her research interests are in the fields of  generalized functions, operator theory, semigroups of linear operators, generalized stochastic processes... She is a member of several international and domestic projects.


Some of her selected publications are:

1. S. Pilipović, M. Žigić, Suppleness of the sheaf of algebras of generalized functions on manifolds, J. Math. Anal. Appl. 379 (2011) 482–486.

2. C. Chen, M. Kostić, M. Li, M. Žigić, Complex Powers of C-sectorial Operators. Part I, Taiwanese J. Math. 17(2) (2013) 465-499.

3. Ј. Aleksić, V. Kostić, M. Žigić, Spectrum localizations for matrix operators on lp spaces, Appl. Math. Comput. 249 (2014) 541-553.

4. T. Levajković, S. Pilipović, D. Seleši, M. Žigić, Stochastic evolution equations with Wick-polynomial nonlinearities, Electron. J. Probab. 23(116) (2018) 1-25.

5. S. Pilipović, B. Prangoski, M. Žigić, Invertibility of matrix type operators of infinite order with exponential off-diagonal decay, Linear Algebra Appl. 582 (2019) 346-358.

Dr. Smiljana Jakšić (TM2)

Associate Professor

Faculty of Forestry, University of Belgrade (UB-FF)

E-mail: smiljana.jaksic@sfb.bg.ac.rs

Phone: +381 11 3053836 

Webpage: www.sfb.bg.ac.rs/en/smiljana-jaksic

Academic background


Smiljana Jakšić defended her PhD thesis in 2016. at the Faculty of Sciences University of Novi Sad.

She has been an Associate Professor at the University of Belgrade Faculty of Forestry since 2023.


Research


Her research interests are in the fields of generalized functions and pseudo-differential operators. She was a member of several bilateral, multilateral and national projects.


Some of her recent publications are:

1. Jaksic Smiljana, Pilipovic Stevan (2023) psi;DOs with radial symbols and spaces of type G, FILOMAT, vol. 37, No. 26, 8755-8763.

2. Abreu Luis Daniel, Balazs Peter, Jaksic Smiljana (2023) The affine ensemble: determinantal point processes associated with the ax+b group, JOURNAL OF THE MATHEMATICAL SOCIETY OF JAPAN, vol. 75, No. 2, 469-483.

3. Jaksic Smiljana, Pilipovic Stevan, Prangoski Bojan (2023) Global regularity of Weyl pseudo-differential operators with radial symbols in each phase-space variable, JOURNAL OF PSEUDO-DIFFERENTIAL OPERATORS AND APPLICATIONS, vol. 14, No. 1.

4. Jaksic Smiljana, Maksimovic Snjezana, Pilipovic Stevan (2018) An algebraic approach to tempered ultradistributions, JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS, vol. 466, No. 1, 927-935.

Dr. Filip Tomić (TM3)

Associate Professor

Faculty of Technical Sciences, University of Novi Sad (FTNUNS)

E-mail: filip.tomic@uns.ac.rs 

Phone: +381 21 4852288   

Webpage: sites.google.com/view/filiptomic

Academic background


Filip Tomić defended his PhD thesis in 2016 at the Faculty of Sciences University of Novi Sad.

He is an Associate Professor at the Faculty of Technical Sciences University of Novi Sad since 2022. 


Research


His research interests are in the fields of generalized functions, time-frequency analysis and microlocal analysis.


1. N. Teofanov, F. Tomić, Extended Gevrey regularity via weight matrices, Axioms 2022, 11(10), 576.

2. S. Pilipović, N. Teofanov, F. Tomić, Boundary values in ultradistribution spaces related to extended Gevrey regularity, Mathematics, 9(1), 7 (2021).

3. N. Teofanov, F. Tomic, Extended Gevrey regularity via the short-time Fourier transform,  Advances in  Micro-Local and time-frequency analysis, Applied Numerical and Harmonic Analysis, Birkhauser (2020).

4. S. Pilipović, N. Teofanov, F. Tomić, A Paley-Wiener theorem in extended Gevrey regularity. J. Pseudo-Differ. Oper. Appl. 11 (2020), no. 2, 593–612.

5. S. Pilipović, N. Teofanov, and F. Tomić, On a class of ultradifferentiable functions, Novi Sad Journal of  Mathematics, 45 1, (2015), 125--142.

Dr. Đorđe Vučković (TM4)

Assistant Professor 

Technical Faculty Mihajlo Pupin, University of Novi Sad (TFZR)

E-mail: djordjeplusja@gmail.com 

Phone: 

Webpage: rs.linkedin.com/in/djordje-vuckovic

Academic background


Đorđe Vučković defended his phD thesis in 2018 at the University of Ghent in Belgium. 

He is an Assistant Professor at the Technical Faculty "Mihajlo Pupin" in Zrenjanin since 2022. 


Research


His research interests are in the fields of generalized functions, pseudodifferential operators, and harmonic analysis. He is a member of several international and domestic projects. 


Some of his publications:

1. Đ. Vučković, J. Vindas, Eigenfunction expansions of ultradifferentiable functions and ultradistributions in  ℝn , J. Pseudo-Differ. Oper. Appl. (2016), vol. 7 no. 4,  519-531.

2. Đ. Vučković, J. Vindas,  Ultradistributional boundary  values of harmonic functions on the sphere, J. Math. Anal. Appl. vol. 457, no 1, 533-550.

3. Đ. Vučković, S. Pilipović, B. Prangoski, Convolution with the kernel within ultradistribution spaces, Mediterr. J. Math 18 (2021), 1-18.

4. Đ. Vučković, S. Pilipović, B. Prangoski, Extension of localisation operators to ultradistributional symbols with super-exponential growth, Rev. Real Acad. Cienc. Exactas Fis. Nat. Ser. A-Mat. 116 (4)(2022), 172 .

Dr. Suzana Aleksić (TM5)

Associate Professor 

Faculty of Science, University of Kragujevac (FSUKG)

E-mail: suzana.aleksic@pmf.kg.ac.rs 

Phone: +381 34 336223 

Webpage: imi.pmf.kg.ac.rs

Academic background


Suzana Aleksić defended her PhD thesis in 2011 at the Faculty of Sciences University of Novi Sad.

She is an Associate Professor at the Faculty of Science University of Kragujevac since 2022.


Research


Her research interests are in the fields of  frame theory, fractional calculus and fixed-point theory. She is a member of several international and domestic projects.


Some of her selected publications are:

1. S. Aleksić, A. Cabada, S. Dimitrijević, T. V. Tomović Mladenović, The existence of a solution for nonlinear fractional differential equations where nonlinear term depends on the fractional and first order derivative of an unknown function, Filomat, Volume 37, Number 15 (2023), 3871-3882. 

2. A. Aksentijević, S. Aleksić, & S. Pilipović, The structure of shift-invariant subspaces of Sobolev spaces, Theor Math Phys 218, 177-191 (2024). DOI: 10.1134/S0040577924020016 (ISSN 0040-5779).

3. S. Xu, Y. Han, S. Aleksić, S. Radenović, Fixed point results for nonlinear contractions of Perov type in abstract metric spaces with applications, Aims Mathematics, 2022, Volume 7, Issue 8: 14895-14921. doi: 10.3934/math.2022817

4. S. Aleksić, Z. D. Mitrović, S. Radenović, Picard sequences in b-metric spaces, Fixed Point Theory 21, No. 1, 35-46, 2020. DOI: 10.24193/fpt-ro.2020.1.03

5. A. Cabada, S. Dimitrijević, T. Tomović, S. Aleksić, Existence of solutions of nonlinear and non-local fractional boudanry value problems, Mediterr. J. Math. 16(5) (2019), 18 pages.

Aleksandar Aksentijević (TM6)

Junior Research Associate

Faculty of Science, University of Kragujevac (FSUKG)

E-mail: aksentijevic@kg.ac.rs

Phone: +381 34 336223

Webpage: imi.pmf.kg.ac.rs

Academic background

Aleksandar Aksentijević is a Junior Research Associate at FSUKG, and PhD student at PhD School of Mathematics in Serbia, joint graduate school of the mathematics departments of four Serbian Universities and Mathematical Institute of the Serbian Academy of Sciences and Arts. His PhD thesis is in preparation.


Research

His research interests are in the field of harmonic analysis, microlocal analysis, generalized functions...

Publications:

1. Aleksandar Aksentijević, Suzana Aleksić, & Stevan Pilipović, The structure of shift-invariant subspaces of Sobolev spaces, Theoretical and Mathematical Physics 218, 177-191 (2024). DOI: 10.1134/S0040577924020016 (ISSN 0040-5779) .

Stefan Tutić (TM7)

Teaching Assistant 

Faculty of Sciences, University of Novi Sad (UNSFS)

E-mail: stefan.tutic@dmi.uns.ac.rs 

Phone:  +381 21 4852796 

Webpage: matematika.pmf.uns.ac.rs/en/about-us/people/stefan-tutic

Academic background

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Research

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