Recent Free Boundary and Interface Problems (FBIP) Preprints 1 min read · Thu, May 16 2024 News D.J. Araújo and R. Teymurazyan, Interacting free boundaries in obstacle problems, submitted. R. Teymurazyan, The fractional Laplacian: a primer, Coimbra Mathematical Texts, Springer Cham, to appear. C. Alcantara, E.A. Pimentel, and J.M. Urbano, Hessian regularity in Hölder spaces for a semi-linear bi-Laplacian equation, submitted. D.J. Araújo, G.S. Sá, E.V. Teixeira and J.M. Urbano, Oscillatory free boundary problems in stochastic materials, arXiv:2404.03060. E.A. Pimentel and J.M. Urbano (Eds.), Modern methods in the analysis of free boundary problems, Coimbra Mathematical Texts, Springer