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COSA 2026

4th Conference on Ordered Structures and their Applications

With a Special Focus on Applications to Finance, Actuarial Science and Mathematical Finance

September 14–18, 2026 – CIRM, Marseille, France

We are pleased to announce that the 4th edition of the Conference on Ordered Structures and their Applications (COSA) will take place at the CIRM, a world-class research center located in Marseille, France, from September 14 to 18, 2026.

In this edition, COSA conference brings together researchers working on Mathematical Finance with specialists working on Riesz spaces, vector lattices, ordered algebraic structures, and their applications in mathematical finance, economics, and data science

🌍 A Journey from South to North

COSA began as a virtual event during the pandemic and has since evolved into a traveling conference, with past editions held in Tozeur (Tunisia), Kenitra (Morocco), and the Wits Rural Facility (South Africa).

This 2026 edition marks a symbolic scientific milestone: an initiative born in Africa now hosted at one of Europe’s most prestigious mathematical centers. It highlights the growing international recognition of African scientific communities, despite persistent structural challenges.

📌 Key Information

  • 📅 Dates: September 14–18, 2026
    (Arrival: Sunday, September 13 | Departure: Friday, September 18)
  • 📍 Venue: CIRM – Centre International de Rencontres Mathématiques, Luminy, Marseille, France
  • 🗣️ Working Language: English
  • 👥 Audience: Researchers, PhD students, postdocs, and applied mathematicians

🧾 Themes and Topics

  • Financial Mathematics and Actuarial Science.
  • Mathematical Economics
  • Ordered vector spaces and lattice theory
  • Functional analysis and topological vector lattices
  • Ordered structures in optimization and machine learning

🧠 Plenary Speakers (Confirmed)

  • Tahir Choulli – University of Alberta, Canada
  • Mathieu Rosenbaum – École Polytechnique, France
  • Peter Tankov – ENSAE Paris, France
  • Paolo Guasoni – Dublin City University, Ireland
  • Luciano Campi – University of Milan (Italy) & LSE (UK)
  • Bruce A. Watson – University of the Witwatersrand, South Africa
  • Pedro Tradacete – ICMAT – CSIC, Spain
  • Marcel de Jeu – Universiteit Leiden, Netherlands
  • Jamel Jaber – Université de Carthage, Tunisia
  • Anke Kalauch – Technische Universität Dresden, Germany

✏️ Pre-Registration – Now Open!

We are launching the pre-registration campaign for COSA 2026.

🎯 Subsidized Participation

Thanks to the support of our partners, we offer a maximum of 70 – 80 subsidized spots at a flat rate of €350, covering:

✅ Full registration fees
✅ On-site accommodation at CIRM (September 13–18)
✅ Full board: breakfasts, lunches, dinners
✅ Coffee breaks
✅ Access to all scientific sessions

🎓 These spots will be prioritized for PhD students, early-career researchers, and participants from low-resource countries. Selection will be based on the information provided in the pre-registration form.

Participants also have the option to contribute €700 instead of €350, thereby providing additional support to the event and helping us offer free registration to disadvantaged researchers.

🧾 Standard Participation

Participants not selected for a subsidized spot can still attend the conference by paying a €150 fee, which includes:

✅ Registration
✅ Lunches and coffee breaks on site

🚫 Accommodation and dinners are not included and must be arranged separately.

✈️ Accommodation and Transport Options in Marseille

For participants who prefer not to stay on-site at the CIRM, a dedicated page has been created to provide detailed information about transportation and accommodation options in Marseille.
This page includes recommended hotels, guesthouses, and travel routes connecting the city center to the CIRM campus (Luminy) by public transport — including the Bus B1 line, which links the Castellane district in downtown Marseille to the CIRM in approximately 30 minutes.

🔗 You can consult this page here: Getting to CIRM – Transport & Accommodation

📅 Important Deadlines

  • 🔗 Pre-registration is required for all participants: https://rgosa.net/cosa-2026-pre-registration-form/
  • 📬 You will receive a response to your pre-registration no later than March 30, 2026
  • 🕐 We strongly recommend registering as early as possible, as the number of subsidized places is limited and demand is expected to be high

👥 Pre-registered Participants

The following colleagues have already pre-registered for COSA 2026:

  • Dr. Abdelkrim Mehenni, Université Mohamed Boudiaf of M’Sila, Algeria (Professor)
  • Dr. Asma Khedher, University of Amsterdam, The Netherlands (Other)
  • Dr. Dorsaf Cherif, University of Tunis El Manar, Tunisia (Other)
  • Dr. Emma Hubert, CEREMADE, Université Paris Dauphine & PSL, France (Professor)
  • Dr. Eugene Bilokopytov, University of Alberta, Canada (Other)
  • Dr. Fairouz Bouchelaghem, University Abd El Hamid Ibn Badis Mostaganem, Algeria (Other)
  • Dr. Hamza Hafsi, University of Tunis, Tunisia (Professor)
  • Dr. Marwa Masmoudi, Tunis El Manar University, Tunisia (Other)
  • Dr. Page Thorn, Blue Mountain Christian University, USA (Professor)
  • Dr. Ronalda Benjamin, Stellenbosch University, South Africa (Other)
  • Dr. Sahiba Arora, Leibniz University Hannover, Germany (Other)
  • Dr. Thinh Vu, Ghent University, Belgium (Professor)
  • Mr. Abdelkarim Guesmia, Université Sétif 1, Algeria (Other)
  • Mr. David de Hevia, Instituto de Ciencias Matemáticas (CSIC), Spain (PhD Student)
  • Mr. David Muñoz-Lahoz, Universidad Autónoma de Madrid, Spain (PhD Student)
  • Mr. Florian Boisen, Dresden University of Technology, Germany (PhD Student)
  • Mr. Gabriel Eliasson Rodriguez, Bachelor at Uppsala University, Sweden (Other)
  • Mr. Houssem Sellami, University of Tunis El Manar, Tunisia (PhD Student)
  • Mr. Janko Stennder, TU Dresden, Germany (Postdoctoral Researcher)
  • Mr. Kevin Abela, University of Malta, Malta (PhD Student)
  • Mr. Mootez Gallaoui, University of Gafsa, Tunisia (PhD Student)
  • Mr. Samuel Tiersma, Leiden University, The Netherlands (PhD Student)
  • Mr. Sello Patrick Mbambo, University of the Free State, South Africa (PhD Student)
  • Mr. Wassim Dhifaoui, University of Tunis El Manar, Tunisia (PhD Student)
  • Mr. Wouter Andringa, University of Amsterdam, The Netherlands (PhD Student)
  • Mr. Zied Gharsellaoui, University of Carthage, Tunisia (PhD Student)
  • Mrs. Siwar Dkhilalli, University of Monastir, Tunisia (PhD Student)
  • Mme Ahsen Sena Yurtoglu, Bursa Technical University, Turkey (PhD Student)
  • Prof. Anil Kumar Karn, NISER Bhubaneswar, India (Professor)
  • Prof. Anis Matoussi, Institut du Risque et de l’Assurance, Le Mans Université, France (Professor)
  • Prof. Anke Kalauch, Technische Universität Dresden, Germany (Professor)
  • Prof. Bruce A. Watson, University of the Witwatersrand, South Africa (Professor)
  • Prof. Christa Cuchiero, University of Vienna, Austria (Professor)
  • Prof. Emanuel Chetcuti, University of Malta, Malta (Professor)
  • Prof. Ilya Molchanov, University of Bern, Switzerland (Professor)
  • Prof. Ismat Beg, Lahore School of Economics, Pakistan (Professor)
  • Prof. Jamel Jaber, Université de Carthage, Tunisia (Professor)
  • Prof. Jawad H’Michane, ENSA-Kénitra, Morocco (Professor)
  • Prof. Josef Teichmann, ETH Zurich, Switzerland (Professor)
  • Prof. Laurence Carassus, CentraleSupélec, Université Paris-Saclay, France (Professor)
  • Prof. Lioudmila Vostrikova, Angers University, France (Professor)
  • Prof. Luciano Campi, University of Milan & LSE (Professor)
  • Prof. Marcel de Jeu, Universiteit Leiden, Netherlands (Professor)
  • Prof. Mark Roelands, Leiden University, The Netherlands (Professor)
  • Prof. Martin Schweizer, ETH Zurich, Switzerland (Professor)
  • Prof. Mathieu Rosenbaum, École Polytechnique, France (Professor)
  • Prof. Mihail Zervos, London School of Economics, United Kingdom (Professor)
  • Prof. Michèle Vanmaele, Ghent University, Belgium (Professor)
  • Prof. Moulay Othman Aboutafail, Ibn Tofail University, Morocco (Professor)
  • Prof. Paolo Guasoni, Dublin City University, Ireland (Professor)
  • Prof. Pedro Tradacete, ICMAT – CSIC, Spain (Professor)
  • Prof. Peter Tankov, ENSAE Paris, France (Professor)
  • Prof. Tahir Choulli, University of Alberta, Canada (Professor)
  • Prof. Timur Oikhberg, University of Illinois, USA (Professor)
  • Prof. Valentin Ferenczi, University of São Paulo, Brazil (Professor)
  • Prof. Vinicius Miranda, University of São Paulo, Brazil (Professor)
  • Prof. Vladimir Troitsky, University of Alberta, Canada (Professor)
  • Prof. Walter Schachermayer, University of Vienna, Austria (Professor)
  • Prof. Youssef Azouzi, University of Tunis El Manar, Tunisia (Professor)
  • Prof. Yuri Kabanov, Université Marie et Louis Pasteurs, France (Professor)

This list will be updated regularly as new pre-registrations are received.

🤝 Organizing Committee

📧 Contact: cosa2026@rgosa.net

Stay tuned for further updates and join us in celebrating the power of mathematics to build bridges across continents.

Join COSA 2026: Explore Mathematical Finance and Ordered Structures in Marseille!!