A solvable high-dimensional model where nonlinear autoencoders learn structure invisible to PCA while test loss misaligns with generalization. - Vicente Conde Mendes; Lorenzo Bardone; Cédric Koller; Jorge Medina Moreira; Vittorio Erba; Emanuele Troiani; Lenka Zdeborová (CoRR, 2026)

Tracing Persona Vectors Through LLM Pretraining. - Viktor Moskvoretskii; Dominik Glandorf; Jorge Medina Moreira; Tanja Käser; Robert West 001 (CoRR, 2026)