Foreword; 1. Quantitative symplectic geometry K. CIELIEBAK, HELMUT HOFER, J. LATSCHEV, aND F. SCHLENK; 2. Local rigidity of group actions: past, present, future David Fisher; 3. Le lemme d’Ornstein–Weiss d’après Gromov Fabrice Krieger; 4. Entropy of holomorphic and rational maps: a survey Shmuel Friedland; 5. Causes of stretching of Birkhoff sums and mixing in flows on surfaces Andrey Kochergin; 6. Solenoid functions for hyperbolic sets on surfaces Alberto A. Pinto and David A. Rand; 7. Random walks derived from billiards Renato Feres; 8. An aperiodic tiling using a dynamical system and Beatty sequences Stanley Eigen, Jorge Navarro, and Vidhu S. Prasad; 9. A Halmos–von Neumann theorem for model sets, and almost automorphic dynamical systems E. Arthur Robinson Jr.; 10. Problems in dynamical systems and related topics Boris Hasselblatt.