Dr. Zafeirakis Zafeirakopoulos

Zafeirakis Zafeirakopoulos is an Associate Professor in the Department of Mathematics of the National and Kapodistrian University of Athens (since September 2025), where he leads the Athens node of ALCYON. He is a mathematician who spends most of his time designing and implementing algorithms, combining partition analysis, polyhedral geometry and symbolic computation; he is the co-author of Polyhedral Omega, an algorithm for solving linear Diophantine systems.

He studied mathematics and computational science at the University of Athens and received his PhD from the Research Institute for Symbolic Computation (RISC) of Johannes Kepler University Linz in 2012, supervised by Peter Paule and Matthias Beck. He was then a postdoctoral researcher at RISC, at the Department of Informatics and Telecommunications of the University of Athens and at the Department of Mathematics of Galatasaray University.

From 2016 to 2022 he was an Assistant Professor in the Department of Computer Engineering of Gebze Technical University. He then spent two years as a maître assistant at the University of Geneva, in the Eccellenza project of Jehanne Dousse, and was a researcher in the ELIDEK project of Maria Chlouveraki at the University of Athens.

He is the Information Director of ACM SIGSAM and an associate editor of ACM Communications in Computer Algebra.

Publications with ALCYON

1. preprint

   Small Resultant Systems via Linear Combinations

   Mahmut Levent Doğan, Elias Tsigaridas, Zafeirakis Zafeirakopoulos

   arXiv:2607.29308, 2026

2. preprint

   Resultant multiplicity via projective degrees and applications to tensor eigenvalues

   Mahmut Levent Doğan, Elias Tsigaridas, Zafeirakis Zafeirakopoulos

   arXiv:2609.01268, 2026

3. conference

   Sparse multivariate interpolation and rational generating functions of polyhedra

   Eugenia Maria Betsani, Zafeirakis Zafeirakopoulos

   CASC 2026, 28th International Workshop on Computer Algebra in Scientific Computing, Bath, UK, 2026

4. journal

   A Julia Package for Polyhedral Omega and Applications

   Tülay Ayyıldız, Deniz Naz Demirel, İsmail Tapan, Zafeirakis Zafeirakopoulos

   ACM Communications in Computer Algebra 58(2) (ISSAC 2024 software presentation), 2024

5. journal

   PTOPO: Computing the geometry and the topology of parametric curves

   Christina Katsamaki, Fabrice Rouillier, Elias P. Tsigaridas, Zafeirakis Zafeirakopoulos

   Journal of Symbolic Computation, 2023 · PDF

6. book

   Special Issue for the 27th International Conference on Applications of Computer Algebra (ACA 2022, Istanbul), Selected papers

   Michela Ceria, Ilias Kotsireas, Teo Mora, Zafeirakis Zafeirakopoulos (eds.)

   Applicable Algebra in Engineering, Communication and Computing, 2023

7. book

   Mathematical Aspects of Computer and Information Sciences - 8th International Conference, MACIS 2019

   Daniel Slamanig, Elias P. Tsigaridas, Zafeirakis Zafeirakopoulos

   Springer LNCS, 2020

8. conference

   PTOPO - a maple package for the topology of parametric curves

   Christina Katsamaki, Fabrice Rouillier, Elias P. Tsigaridas, Zafeirakis Zafeirakopoulos

   ACM Communications in Computer Algebra (ISSAC 2020 software presentation), 2020

9. conference

   On the geometry and the topology of parametric curves

   Christina Katsamaki, Fabrice Rouillier, Elias P. Tsigaridas, Zafeirakis Zafeirakopoulos

   ISSAC 2020, 2020

10. conference

    A Machine Learning Framework for Volume Prediction

    Umutcan Önal, Zafeirakis Zafeirakopoulos

    Analysis of Experimental Algorithms - SEA 2019, 2019

11. conference

    Experimental Study of the Ehrhart Interpolation Polytope

    Vissarion Fisikopoulos, Zafeirakis Zafeirakopoulos

    Mathematical Aspects of Computer and Information Sciences - MACIS 2017, 2017

12. journal

    Polyhedral Omega: a New Algorithm for Solving Linear Diophantine Systems

    Felix Breuer, Zafeirakis Zafeirakopoulos

    Annals of Combinatorics, 2017 · PDF

13. journal

    Efficient computation of dual space and directional multiplicity of an isolated point

    Angelos Mantzaflaris, Hamid Rahkooy, Zafeirakis Zafeirakopoulos

    Computer Aided Geometric Design 47, 2016 · PDF

14. conference

    On the space of Minkowski summands of a convex polytope

    Ioannis Z. Emiris, Anna Karasoulou, Eleni Tzanaki, Zafeirakis Zafeirakopoulos

    EuroCG '16, 2016 · PDF

15. journal

    Generating Functions and Triangulations for Lecture Hall Cones

    Matthias Beck, Benjamin Braun, Matthias Köppe, Carla D. Savage, Zafeirakis Zafeirakopoulos

    SIAM Journal on Discrete Mathematics, 2016 · PDF

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