| Aliasghar Alikhani-Koopaei, Pennsylvania State University-Berks College, PA |
| Marek Balcerzak, Lodz University of Technology |
| Antonio Boccuto, University of Perugia, Italy |
| Zoltán Boros, University of Debrecen, Hungary |
| Lev Bukovský, P.J. Šafárik University, Košice |
| Emanuel Chetcuti, University of Malta |
| Miroslav Chlebik, University of Sussex, UK |
| Krzysztof Ciepliński, AGH University of Science and Technology, Kraków, Poland |
| Peter Eliaš, Slovak Academy of Sciences, Košice, Slovakia |
| Włodzimierz Fechner, Lodz University of Technology, Łódź, Poland |
| Malgorzata Filipczak, Lodz University, Poland |
| Rafał Filipów, University of Gdansk |
| Roman Frič, Slovak Academy of Sciences, Košice, Slovakia |
| Ľubica Holá, Slovak Academy of Sciences, Bratislava |
| Dušan Holý, Department of Mathematics and Computer Science, Faculty of Education, Trnava University, Trnava, Slovakia |
| Grażyna Horbaczewska, University of Lodz |
| Jakub Jasinski, University of Scranton |
| Dr. Surinder Pal Singh Kainth, Panjab University, Chandigarh |
| Aleksandra Karasińska, University of Lodz |
| Ewa Korczak-Kubiak, Lodz University, Poland |
| Stanisław Kowalczyk, Pomeranian Academy in Słupsk |
| Krzysztof Kowitz, University of Gdańsk |
| Marta Kwela, University of Gdańsk |
| Paolo Leonetti, Università Bocconi |
| Mateusz Lichman, Lodz University of Technology, Łódź, Poland |
| Anna Loranty, Faculty of Mathematics and Computer Science, Łódź, Poland |
| Branislav Novotný, Bratislava |
| Piotr Nowakowski, Institute of Mathematics, Lodz University of Technology, Poland |
| Andrzej Nowik, University of Gdańsk |
| Paweł Pasteczka, Pedagogical University of Krakow |
| Ryszard J. Pawlak, Faculty of Mathematics and Computer Science Łódź University, Łódź, Poland |
| Emilia Przemska, Pomeranian Academy in Słupsk |
| Patrycja Rychlewicz, Faculty of Mathematics and Computer Science Łódź University, Łódź, Poland |
| Muwafaq Mahdi Salih, Debrecen University, Debrecen, Hungary |
| Narinder Singh, Panjab University, Chandigarh, India |
| Valentin Skvortsov, Moscow State University, Moscow, Russia |
| Sumit Som, NIT Durgapur, India |
| Árpád Száz, Institute of Mathematics, University of Debrecen, H-4002 Debrecen, Pf . 400 |
| Małgorzata Terepeta, Lodz University of Technology |
| Filip Turoboś, Lodz University of Technology |
| Małgorzata Turowska, Pomeranian Academy in Słupsk |
| Péter Tóth, University of Debrecen, Hungary |
| Benjamin Vejnar, Charles university, Prague, Czechia |
| Elżbieta Wagner-Bojakowska, University of Lodz |
| Amr Zakaria, Institute of Mathematics, University of Debrecen, Debrecen, Hungary |
