COSA 2026

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

✏️ Registration – Now Open

Registration for COSA 2026 is now officially open.

Participants may choose between the following registration categories.

🎯 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.

🤝 Supporting Participation

Participants who wish to further support the conference may choose the supporting registration option.

This contribution helps support the participation of young researchers and colleagues from disadvantaged backgrounds.

The supporting registration includes the same benefits as the subsidized participation package.

🧾 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.

💳 Registration & Payment

Registration is completed through the official payment platform of Université Paris Dauphine – PSL.

🔗 Payment link:
COSA 2026 Registration & Payment Platform

Participants are encouraged to complete their registration as early as possible due to the limited accommodation capacity at CIRM.

📅 Important Deadlines

• Registration is now open.
• Participants are strongly encouraged to register as early as possible due to the limited accommodation capacity at CIRM.
• Participants appearing on the registration list must validate their participation by completing the payment procedure no later than June 20, 2026.
• Registrations not confirmed by payment before this date may be released to participants on the waiting list.

🔗 Registration & Payment Platform:
COSA 2026 Registration & Payment Platform

✈️ 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

👥 Accepted Participants — COSA 2026

The following colleagues are currently accepted for registration at COSA 2026.

This list will be updated regularly as new registrations are confirmed.strations are received.

🤝 Organizing Committee

• Emmanuel LÉPINETTE (Université Paris Dauphine, France)
• Amal Omrani (Université Paris Dauphine, France).
• Mohamed Amine BEN AMOR (LATAO, El Manar University, Tunisia)
• Wen-Chi Kuo (University of the Witwatersrand. South Africa)

📧 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!!