On March 12, 2024, Pablo Raúl Stinga, Associate Professor of Mathematics, delivered the lecture “Abel, Caffarelli and fractional nonlocal equations” at the *Evening of the Abel Prize 2023 – Highlighting the work of Luis Caffarelli* at the Royal Netherlands Academy of Arts and Sciences (KNAW) in Amsterdam.

The Abel Prize was established in 2003 on the 200th anniversary of the birth of Niels Henrik Abel (1802-1829), a Norwegian mathematician, and is considered the *Nobel Prize of Mathematics*. On May 23, 2023, Luis A. Caffarelli, Professor at The University of Texas at Austin, received the award from the Norwegian Academy of Sciences and Letters. Caffarelli, the first Argentinean and Hispanoamerican to receive the Abel Prize, is a leading mathematician who made breakthrough contributions to the field of partial differential equations. His research is used to describe various phenomena, such as the melting of ice, the propagation of flames or the growth of population groups.

ISU had the privilege of hosting Professor Caffarelli in the summer of 2017, when he came to campus to deliver a 3-hour mini-course on his recent research on nonlocal equations at the first edition of the Nonlocal School on Fractional Equations. Caffarelli is the only Abel Prize awardee that has visited ISU.

The two-centuries old Dutch Academy has been organizing the *Evenings of the Abel Prize *since 2018. These public lectures bring expert, renowned scientists to educate the general public about the work of the awardees. Whenever possible, the awardees themselves participate of the *Evenings*.

This time, Pablo Raúl Stinga (who was a postdoctoral researcher advised by Caffarelli and an Argentinean himself) and two other mathematicians gave lectures about the possibilities and applications of Caffarelli’s contributions to the field of partial differential equations. Stinga’s lecture focused on the mathematical connections between Abel and Caffarelli, and the most recent work of Caffarelli on nonlocal equations of fractional order. A recording of the event, including the three lectures, is available here.

*Picture, from left to right:*

*Jan van Neerven, Juan Luis Vázquez, Stefanie Sonner and Pablo Raúl Stinga.*