Contents:
José M. Mazón, Julio D. Rossi, Sergio Segura de León. The $1$--Laplacian elliptic equation with inhomogeneous Robin boundary conditions. 401--430.
Aslihan Demirkaya, Sevdzhan Hakkaev, Milena Stanislavova, Atanas Stefanov. On the spectral stability of periodic waves of the Klein-Gordon equation. 431--454.
Zhihui Xie. Derivation of a nonlinear Schrödinger equation with a general power-type nonlinearity in $d=1,2$. 455--504.
Jonathan Eckhardt, Fritz Gesztesy, Roger Nichols, Alexander Sakhnovich, Gerald Teschl. Inverse spectral problems for Schrödinger-type operators with distributional matrix-valued potentials. 505--522.
Guido De Philippis, Alessio Figalli. A note on the dimension of the singular set in free interface problems. 523--536.
Francisco Guillén-González, María Ángeles Rodríguez-Bellido. A uniqueness and regularity criterion for Q-tensor models with Neumann boundary conditions. 537--552.
Ines Ben Ayed, Mohamed Khalil Zghal. Description of the lack of compactness in Orlicz spaces and applications. 553--580.
Tamotu Kinoshita. On second order weakly hyperbolic equations with oscillating coefficients. 581--600.