Διεθνή συνέδρια
1983 SEVENTH BALKAN MATHEMATICAL CONGRESS (B.U.M.),Athens, Greece, Dec. 19-23.
1986 INTERNATIONAL CONFERENCE COMBINATORICS’86, Passo della Mendola, Italy, June 30-July 5.
1988 CONFERENCE ON ALGEBRAIC LOGIC, JANOS BOLYAI MATHEMATI-CAL SOCIETY, Budapest, Hungary, Aug. 8-14.
1990 FOURTH INTERNATIONAL CONGRESS ON ALGEBRAIC HYPERSTRU-CTURES AND APPLICATION (AHA), Xanthi, Greece, June 27-30.
1990 ΣEMINAΡIO ΠΛΗΡΟΦΟΡΙΚΗΣ , Δελφοί, Οργάνωση: Ευρωπαϊκό Κέντρο Δελφών και Universite P. Et M. Curie (Paris VI), Σεπ. 15-16.
1991 CONFERENCE ON DISIGNES, STEINER SYSTEMS AND HYPERSTRU-CTURES, Milazzo Sicily, Italy, Sept.. 26-29.
1992 THE FIRST EUROPEAN CONGRESS OF MATHEMATICS E.C.M., Paris, France, July 6-10.
1992 THIRD INTERNATIONAL CATANIA CONFERENCE, COMBINATORICS’ 92, Acireale, Italy, Sept.. 6-13.
1993 FIFTH INTERNATIONAL CONGRESS ON ALGEBRAIC HYPERSTRU-CTURES AND APPLICATIONS (AHA), Iasi, Romania, July 4-10.
1993 INTERNATIONAL SYMPOSIUM ON HYPERSTRUCTURES AND THEIR APPLICATIONS, Thessaloniki, Greece, Nov. 11-13.
1994 INTERNATIONAL CONFERENCE ON INCIDENCE GEOMETRIES AND COMBINATORIAL STRUCTURES, COMBINATORICS’94, Roma & Mondesilvano (PE), Italy, Sept.10-16.
1995 I..R.B. INTERNATIONAL WORKSHOP 1995, Monderoduni (IS), Molise, Italy, August 7-13.
1995 INTERNATIONAL SYMPOSIUM ON HYPERSTRUCTURES AND THEIR APPLICATIONS IN CRYPTOGRAPHY, GEOMETRY AND PROBABILITY, Pescara, Italy, Sept. 29 - Oct. 2.
1995 WORKSHOP ON GLOBAL ANALYSIS, DIFFERENTIAL GEOMETRY AND LIE ALGEBRAS, Thessaloniki, Greece, Dec. 13-16.
1996 SIXTH INTERNATIONAL CONGRESS ON ALGEBRAIC HYPERSTRU-CTURES AND APPLICATIONS (AHA), Prague, Czech Republic, Sept. 1-7.
1996 COMBINATORICS’96 in honor of Giuseppe Tallini, Assisi (Perugia), Italy, Sept. 8 -14.
1996 WORKSHOP ON GLOBAL ANALYSIS, DIFFERENTIAL GEOMETRY AND LIE ALGEBRAS,Thessaloniki, Greece, Oct. 21 -25.
1997 INTERNATIONAL CONGRESS IN ALGEBRAS AND COMBINATORICS, Hong Kong, August 19 - 23.
1998 DIFFERENTIAL GEOMETRY, GLOBAL ANALYSIS AND LIE ALGEBRAS, Aristotle University of Thessaloniki, Greece, June 24 -27.
1999 7th INTERNATIONAL CONGRESS ON ALGEBRAIC HYPERSTRUCTURES AND APPLICATIONS, Palazzo dei Duchi di Santo Stefano, Taormina, Italy, June 13-19.
1999 CONFERENCE ON THE GEOMETRY AND ITS APPLICATIONS IN TECHNOLOGY, Aristotle University of Thessaloniki, Greece, June 23 -27.
2000 INTERNATIONAL CONGRESS “Constantin Caratheodory in his ... origins”, Democritus University of Thrace, Vissa-Orestiada, Greece, September 1-4.
2000 8ο Πανελλήνιο Συνέδριο Μαθηματικής Ανάλυσης, Δημοκρίτειο Πανεπιστήμιο Θράκης, Ξάνθη, Σεπτέμβριος 29-30.
2001 TENTH INTERNATIONAL COLLOQUIUM ON NUMERICAL ANALYSIS AND COMPUTER SCIENCE WITH APPLICATIONS, Plovdiv, Bulgaria, August 12-17.
2002 4ο Πανελλήνιο Συνέδριο Άλγεβρας και Θεωρίας Αριθμών (με διεθνή συμμετοχή), Πανεπιστήμιο Πατρών - Σχολή Θετικών Επιστημών, Πάτρα, Ελλάδα, Μάιος 30- Ιούνιος 2.
2002 4th INTERNATIONAL CONFERENCE ON GEOMETRY AND IT’S APPLICATIONS IN TECHNOLOGY, Balkan Society of Geometers, Aristotle University of Thessaloniki-Greece, 25-29 June.
2002 8th INTERNATIONAL CONGRESS ON ALGEBRAIC HYPERSTRUCTURES
AND APPLICATIONS, AHA2002, Democritus University of Thrace, Samothraki - Greece, 1-9 September.
2003 INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING (ICCMSE 2003), Kastoria-Greece, 12-16 September.
2004 1ο Πανελλήνιο Περιβαλλοντικό Συνέδριο:“Σύγχρονα περιβαλλοντολογικά θέματα”, Δημοκρίτειο Πανεπιστήμιο Θράκης, Ν.Ορεστιάδα, 7 έως 9 Μαΐου.
2004 INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS (ICNAAM 2004), Chalkis-Greece, 10-14 September.
2004 INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING (ICCMSE2004),Vouliagmeni-Kavouri, Greece, 19-23 November.
2005 INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS (ICNAAM 2005), Rodos-Greece, 16-20 September.
2005 INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING (ICCMSE2005), Loutraki-Korinthos, Greece, 21-26 October.
2006 INTERNATIONAL CONFERENCE “SUSTAINABLE MANAGEMENT AND DEVELOPMENT OF MOUNTAINOUS AND ISLAND AREAS” Naxos-Greece, Sept. 29, 30 and October 1.
2006 INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING (ICCMSE2006), Xania-Crete, Greece, 27 October – 1November.
2006 10ο Πανελλήνιο Επιστημονικό Συνέδριο Ελληνικής Υδροτεχνικής Ένωσης, «Διαχείριση Υδατικών Πόρων και προστασία περιβάλλοντος-Σύγχρονες θεωρήσεις- Προβλήματα και προοπτικές», Ξάνθη 13-16 Δεκεμβρίου 2006.
2007 10th INTERNATIONAL CONFERENCE ON ENGINEERING APPLICATIONS ON NEURAL NETWORKS (EANN), Thessaloniki, Greece, 29-31 August.
2007 INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING (ICCMSE2007), Corfu, Greece, 25 - 30 September.
2008 10th INTERNATIONAL CONGRESS OF ALGEBRAIC HYPERSTRUCTURES AND APPLICATIONS (AHA2008), Brno-Czech Republic, September 3-9.
2009 AIAI 5th IFIP Conference on Artificial Intelligence Applica-tions & Innovations, Thessaloniki, Greece, April 23-25.
2009 11th INTERNATIONAL CONFERENCE ON ENGINEERING APPLICATIONS ON NEURAL NETWORKS (EANN2009), London, United Kingdom, 27-29 August.
2010 6th IFIP (International Federation for Information Processing) Conference on Artificial Intelligence Applications & Innovations (AIAI 2010), Larnaka, Cyprus, 6-7 October.
2011 12th EANN / 7th AIAI Joint Conferences, Engineering Applications of Neural Networks / Artificial Intelligence Applications and Innovations, 15 - 18 September 2011, Corfu, Greece.
2011 11th INTERNATIONAL CONGRESS OF ALGEBRAIC HYPERSTRUCTURES AND APPLICATIONS (AHA2011), Universita degli Studi “G. d’Annunzio” Cheti - Pescara – ITALY, October 16-21.
2012 8th AIAI 2012 Conference on Artificial Intelligence Applications & Innovations (AIAI 2010), Chalkidiki-Greece, September 27-30.
2013 14th EANN Conference, Engineering Applications of Neural Networks (International Neural Network Society), 13 - 16 September 2013, Halkidiki, Greece.
2013 9th AIAI 2012 Conference on Artificial Intelligence Applications & Innovations (AIAI 2013), Paphos, Cyprus, September 30-October 2.
2014 10th IFIP (International Federation for Information Processing) WG 12.5 Conference on Artificial Intelligence Applications & Innovations (AIAI 2014), 19 - 21 September 2013, Rhodes, Greece.
2016 12th IFIP (International Federation for Information Processing) WG 12.5 Conference and Workshops on Artificial Intelligence Applications & Innovations (AIAI 2016), 16 - 18 September 2016, Thessaloniki, Greece.
2016 8th International Conference on Computational Collective Intelligence (ICCCI 2016), Halkidiki, Greece, 28th-30th September, 2016
2017 18th International Conference on Engineering Applications of Neural Networks, EANN 2017, Athens, Greece, August 25-27, 2017.