Lectures (Abroad):
Sorbonne Université and Université Paris Cité, CNRS, IMJ-PRG, May 2025. (invited speaker)
University of la Laguna, Department of Mathematics, (Tenerife/Spain), June 2023. (invited speaker)
The Hebrew University of Jerusalem, Einstein Institute of Mathematics, KU-Jerusalem Lunch seminar, (Jerusalem/Israel), April 2023 (invited speaker)
Institute of Mathematics of the Romanian Academy: Simion Stoilow, (Bucharest/Romania), May 2022. (invited speaker)
University of la Laguna, Department of Mathematics, (Tenerife/Spain), January 2022. (invited speaker)
University of la Laguna, Department of Mathematics, (Tenerife/Spain), September 2021. (invited speaker)
University of la Laguna, Department of Mathematics, (Tenerife/Spain), June 2019. (invited speaker)
University of Ovidius, Faculty of Mathematics and Computer Science, International conference, Combinatorial structures in algebra and geometry, (Constanta/Romania), August 2018.
University of Valladolid, International conference, EACA'S Second International School On Computer Algebra and Applications, (Valladolid/Spain), June 2013.
Çankırı Karatekin University, Department of Mathematics, International conference, Karatekin Mathematics Days, (Cankiri/Turkey), June 2011. (invited speaker)
Lectures (in Greece):
30th ACA 2025, University of Crete, Department of Mathematics, July 2025 (invited speaker)
10th GANT, University of Crete, Department of Mathematics, May 2025 (invited speaker)
Greek Algebra & Number Theory Seminar (online), May 2025 (invited speaker)
University of the Aegean, Department of Mathematics, December 2024
Combinatorics and Geometry in Ioannina (International Conference), September 2024 (invited speaker)
University of Western Macedonia, Department of Mathematics, March 2024 (invited speaker)
Aristotle University of Thessaloniki, Department of Mathematics, 9th pan-Hellenic Algebra and Number Theory Conference, May 2023 (invited speaker)
University of the Aegean, Department of Mathematics, April 2023
National Technical University of Athens, SCGM-2022, July 2022 (invited speaker)
University of Ioannina, Department of Mathematics, May 2022 (invited speaker)
University of Ioannina, Department of Mathematics, September 2021 (invited speaker)
University of the Aegean, Department of Statistics and Actuarial-Financial Mathematics, Main speaker: Seminar on Algebraic Statistics (MSc program), May 2020 (invited speaker)
Aristotle University of Thessaloniki, Department of Mathematics, April 2019 (invited speaker)
University of Ioannina, Department of Mathematics, November 2018
University of Ioannina, Department of Mathematics, May 2016 (invited speaker)
Aristotle University of Thessaloniki, Department of Mathematics, March 2016
University of Ioannina, Department of Mathematics, December 2015
University of the Aegean, Department of Mathematics, May 2015
University of the Aegean, Department of Mathematics, December 2014
Aristotle University of Thessaloniki, Department of Mathematics, November 2013 (invited speaker)
University of Ioannina, Department of Mathematics, September 2011
Aristotle University of Thessaloniki, Department of Mathematics, May 2011
University of Ioannina, Department of Mathematics, November 2007
Other public lectures:
Lyceum of Petras (Mitilini/Lesvos), Topic: "Mathematics without equations", March 2017.