This project builds on our ongoing, successful IIRP-funded project for a joint French-UChicago collaboration in the philosophy of mathematics. Thanks to that funding, we held the inaugural Paris-Chicago Conference in the Philosophy of Mathematics at the Boyer Center in June 2025, followed by a second installment of the conference in June 2026. This grant will support a third installment of this project, as well as the new, expanded forms of European-UChicago collaboration in the philosophy of mathematics we would like to establish in 2027 and beyond.