Acta Mathematica

Volume 232 (2024)

Number 2

Contents

Mildly dissipative diffeomorphisms of the disk with zero entropy

Sylvain Crovisier, Enrique Pujals, and Charles Tresser

pp. 221-323

Collapsing geometry of hyperk\”ahler 4-manifolds and applications

Song Sun and Ruobing Zhang

pp. 325-424