Professor Yannick Sire is a Professor and the Director of Graduate Studies in the Department of Mathematics at Johns Hopkins University. His research spans a diverse range of mathematics, including partial differential equations, harmonic and geometric analysis, and dynamical systems. He has made significant advancements in areas such as non-local diffusion processes, the KAM theory, free boundary problems and many others, contributing deeply to both theoretical and applied mathematics. In recognition of his outstanding contributions to analysis and geometry, Professor Sire was awarded the Simons Fellowship for Mathematical Sciences in 2018 and was honored as a Fellow of the American Mathematical Society in 2021. Among his other accolades are the Simons Visiting Professorship and the distinction of JHU Professor of the Year in 2023.